Definition: 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.
Input: customer: Hello. 
 agent: Hello, how may I assist you today? 
 __ 
 agent: Sure, may I know your name to check the details? 
 customer: Patrick Hall. 
 agent: Just a moment, let me check your reservation status in our records. 
 customer: Ok. 
 agent: Sorry, there are no active reservations on your name to change. 
 customer: No problem, thank you for searching. 
 agent: Thank you for reaching our service.
Output:
customer: I need to change my reservation due to sudden change in my trip. Can you assist me?