You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Can you please help me in booking from BOS to IAH?

ASSISTANT: Sure, I am here to help you with that, can I know your good name to proceed further?

USER: My name is Paul Lewis.

ASSISTANT: Sure, when are you planning to start and return on?

USER: My planned dates are from Feb 26 to Feb 28.

ASSISTANT:  Do you have any class preference?

USER: No.

ASSISTANT: Is there any another specifications on your trip, so that I can arrange like that only.

USER: I want to return in the afternoon.

ASSISTANT: Sorry, there is no flight found on your route.

USER: Ok, No issues. Thank you.

ASSISTANT: Welcome Paul Lewis.