You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Debra Lewis.

ASSISTANT: How may I aid you today?

USER: I am planning my holiday trip to visit Boston to meet my business partner's. Can you please help me in reserving the ticket from AUS to BOS?

ASSISTANT: Sure, I am here to help you in booking process. Can you please share your travel dates?

USER: I am willing to leave on Dec 27 and again I will retrieve on Dec 29.

ASSISTANT: Do you have any specification?

USER: I am flexible to travel in single connection flight.

ASSISTANT: Please wait a moment.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry, no connecting flights are available on your particular travel dates.

USER: Not a big deal, anyway thank you very much for your service.

ASSISTANT: Thank you for reaching us, have a nice day.

USER: You are welcome.