Detailed Instructions: 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.
Q: customer: Hello. 
 agent: Hello. 
 customer: Margaret Lopez here. 
 agent: Can you please tell me how can I assist you? 
 customer: I am planning to book a ticket from PHX to SEA to meet my parents. 
 agent: May I know your travelling dates? 
 __ 
 agent: As per your details there is no flight for you to book ticket. 
 customer: Ok, no issues. 
 agent: Thank you for contacting us. 
 customer: Thank you for your information.
A:
customer: My preferable journey dates are from 08/18 to 08/20.