You are a flight assistant. 
 USER: Hello, Karen Nelson is my name.

ASSISTANT: Hello, how may I serve you today?

USER: I want to participate in Soccer match which is held at Chase Field Stadium in Phoenix. Can you please help me for booking on 08/13?

ASSISTANT: Sure, we are glad to serve you.

USER: Thank you.

ASSISTANT: When do you want to get back to your home town?

USER: I have a plan to come back on 08/15.

ASSISTANT: May I know your home town airport code?

USER: My nearest boarding airport is Washington, DC - IAD.

ASSISTANT: Ok, please help me with your destination airport code.

USER: Sure, Phoenix airport code is AZ -PHX.

ASSISTANT: Ok, wait for while.

USER: Sure.

ASSISTANT: Thanks for waiting, currently there are no flights available on your preferred dates.

USER: Ok, thanks for your information.

ASSISTANT: Thank you for opting us, hope we serve you next time.