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: Hi. 
 agent: Hello, how can I help you? 
 customer: I need to book a ticket from MSP to DEN. Could you book a ticket? 
 agent: Sure, please share me your travelling dates? 
 customer: Travelling dates are from Apr, 17 to Apr, 19. 
 agent: Do you have any class preference? 
 __ 
 agent: Is there any connection limit? 
 customer: I prefer connecting flight. 
 agent: May I know your name? 
 customer: My name is Charles Collins. 
 agent: Sorry, there were no flights with your given details. 
 customer: Thank you.
A:
customer: I am comfortable with any class preference.