You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Donna Adams.

ASSISTANT: How may I assist you?

USER: I would like to spend some time in Washington, can you help me for booking a flight ticket from my location?

ASSISTANT: Sure, I am here to help you. May I know your locations?

USER: My source airport code is ATL and destination airport code is IAD.

ASSISTANT: Ok, please provide your planned dates to get a flight for you.

USER: I would like to stat on 08/27 and return on 08/29.

ASSISTANT: Hawaiian airline providing service to you with price 200 and it's a direct flight, are you comfortable with this airline?

USER: I am fine with the price but please make my reservation on single connecting flight.

ASSISTANT: Ok, please wait for a while to let me check.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry for the inconvenience, as per your request there is no flight for you.

USER: No problem. Thank you for checking.

ASSISTANT: Welcome, have a nice day.