You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: Can you please help me with booking a flight ticket from DEN to BOS?

ASSISTANT: May I know your travel dates?

USER: My travel dates are Dec 30 and Jan 01.

ASSISTANT: Do you have any connecting preferences?

USER: I am comfortable with any connection.

ASSISTANT: Is there any other concern?

USER: No.

ASSISTANT: May I know name to proceed for booking?

USER: My name is Rebecca Hall.

ASSISTANT: No flights found as per your preferences.

USER: That's ok.

ASSISTANT: Thank you for choosing us.

USER: Thanks for checking.