You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Gary Garcia.

ASSISTANT: How can I aid you now?

USER: Can you please help me in booking a flight ticket from HOU to BOS?

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

USER: I would like to fly on Mar 06 and return on Mar 08.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a single connection.

ASSISTANT: May I know about your class preference?

USER: I am comfortable with any class.

ASSISTANT: Do you have any other specifications?

USER: I would like to depart in evening time.

ASSISTANT: Sorry, there are no flights running on your routes.

USER: Not an issue. Thank you for your information.

ASSISTANT: Thank you for contacting us.