You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I render you at this moment?

USER: Can you help me to book a flight from BOS to DEN?

ASSISTANT: Sure, do you need a lay by in between the journey?

USER: I prefer connecting flight.

ASSISTANT: On which dates would you like to travel?

USER: My travelling dates are Sept 12 and 14.

ASSISTANT: May I know your good name please?

USER: My name is Carol Green.

ASSISTANT: Do you have any other preferences?

USER: No.

ASSISTANT: There are no flights found on your requested dates.

USER: No issues, thank you for your time.

ASSISTANT: Thank you for reaching us.