You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you?

USER: I want to watch basketball match at Seattle, could you book my ticket from Phoenix?

ASSISTANT: Sure, I am here to help you. Can you please share me your source airport code and destination airport code?

USER: My origin and destination airport codes are PHX and SEA.

ASSISTANT: When you are willing to travel?

USER: My itinerary dates are 10/21 and 10/23.

ASSISTANT: Just a moment.

USER: Ok.

ASSISTANT: May I know your name?

USER: Anthony Phillips here.

ASSISTANT: Anthony, sorry for inconvenience no flights are available with your requirements.

USER: It's ok, thank you.

ASSISTANT: You are most welcome.