You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you?

USER: I am Melissa Adams. Can you help me in booking my flight ticket from DCA to PHX?

ASSISTANT: Sure, on what dates are you planning to make your trip?

USER: My trip dates will be Sep 15 to Sep 17.

ASSISTANT: Do you need a stop over?

USER: I need a connecting flight.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, currently there are no flights going on your way.

USER: Its ok, thank you.

ASSISTANT: Thank you for choosing us.