You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: I'm Pamela Evans. I am planning to attend music concert at Phoenix, can you please help me with booking a flight ticket?

ASSISTANT: I will help you with that, can you please share your journey dates?

USER: Sure, I would like to take off on 01/22 and return back on 01/24.

ASSISTANT: May I know your airport codes?

USER: My source airport code is SFO and the destination airport code PHX.

ASSISTANT: I am sorry to say that there is no flight found.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for contacting us.

USER: You are welcome.