You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am planning my trip to travel Denver. Can you please help me in reserving the ticket from ORD to DEN?

ASSISTANT: Sure, may I know your travel dates?

USER: I would like to travel on Jan 29 and again I will return back on Jan 31.

ASSISTANT: Do you have any specifications?

USER: I am comfort to travel in direct flight.

ASSISTANT: May I know your name?

USER: Myself Sandra Phillips.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Sorry, there were no flights found on your route.

USER: Not a big deal, anyhow thank you very much for your information.

ASSISTANT: Thank you.