In this task, you're given a dialogue between a customer and a flight booking agent with a gap in the conversation. Your job is to find the answer of the previous dialogue. Avoid using irrelevant extra information while creating the answer. The answer should be relevant to the question before the blank. If you fill the blank with a question, it should have an answer from the agent in the given dialogue. Fill the gap marked with underline.

customer: Hello, Brian Wilson here. 
 agent: Hello, what kind of help do you need from us? 
 customer: I need to book a flight ticket, so can you please help me with booking? 
 agent: Sure, we are here to make your journey comfort. 
 customer: Thank you. 
 agent: Can I know from where you want to start your journey? 
 customer: Yes, I would like to start from Philadelphia, PA-PHL to participate in Music festival which is held on 02/24. 
 agent: On which date you want to start from Philadelphia? 
 customer: I have planned to travel on 02/23 from Philadelphia. 
 agent: Ok, from Philadelphia where you want to fly? 
 customer:     I want to reach Houston, TX-HOU from Philadelphia. 
 agent: May I know your return date? 
 customer: Yes, I would like to return on 02/25. 
 agent: How much can you afford for this journey? 
 customer: I can afford up to 500 for this flight ticket. 
 agent: Thanks for providing your details, please wait a moment I will check the availability of flights and get back to you. 
 customer: Ok, take your time. 
 agent: Thanks for your time, we found a flight with your requirement, airline is UA with price 100 and single connection. Shall I proceed with booking? 
 customer: That's perfect, please go ahead and reserve a ticket for me. 
 agent: Sure, your ticket is reserved on the name Brain Wilson. 
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 agent: Thanks for opting us, have a great day.
customer: Thank you for the assistance.