You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Edward Martinez.

ASSISTANT: Edward, how may I help you?

USER: I have to attend my sister's wedding at Atlanta, could you please help me with booking a flight ticket?

ASSISTANT: Sure, please provide your airport codes.

USER: My nearest source airport code is PHX and destination airport code is ATL.

ASSISTANT: May I know your itinerary dates?

USER: I would like to take off on 07/09 and return on 07/11.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, no flight is found.

USER: That's ok, I will find an another alternate way to complete my trip.

ASSISTANT: Thank you for contacting us.