You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you please  book a flight ticket from IAH to BOS?

ASSISTANT: Sure, may I know your planned travel dates?

USER: Thank you. I have planned my travel  dates as Sept 05 and Sept 07.

ASSISTANT: May I know your connection limit?

USER: I am  looking for single connecting flight.

ASSISTANT: Is there any class preference for you?

USER: No. I am ok with any class.

ASSISTANT: Do you have any other specifications?

USER: No, I do not have any other specifications.

ASSISTANT: May I know your good name?

USER: Sure, myself Nicholas Wright.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: Thank you for reaching us.