You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Deborah Brown.

ASSISTANT: How can I assist you?

USER: I have a business meeting in Phoenix, can you help me for booking a flight ticket?

ASSISTANT: Sure, may I know your source and destination airport codes please?

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

ASSISTANT: Can you please share your planned dates of your journey?

USER: I would like to start my journey on 06/15 and return on 06/17.

ASSISTANT: Please hold on a moment. Brown, no flights has been found on your journey dates.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for approaching us.

USER: Welcome.