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.
Input: customer: Hi, myself Larry Robinson. 
 agent: Hello, how can I provide assistance to you? 
 customer: Can you please book me a ticket for direct flight to reach BOS from DCA? 
 agent: May I know on which dates you are planning to start and return? 
 customer: I am planning to start my journey on Aug 25th and return on Aug 27th. 
 __ 
 customer: I am comfortable with any class. 
 agent: Ok, please wait for a while. 
 customer: Sure, I'll wait. 
 agent: We are sorry to say that, there is no direct flight found on your requested dates. 
 customer: Ok, no problem. Thank you. 
 agent: Thanks for choosing us.
Output:
agent: Ok, which type of class do you prefer for your journey?