You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, welcome to Google agency.

USER: My name is Rebecca Young.

ASSISTANT: How may I help you Rebecca?

USER: I want to visit Phoenix for my friend's birthday, could you help me in booking the ticket?

ASSISTANT: Yes, please provide the airport codes?

USER: The airport codes are AUS to PHX.

ASSISTANT: Ok, please provide your departure and arrival dates?

USER: The dates of travel are from 05/24 to 05/26.

ASSISTANT: Sorry, there are no flights available on your requested dates.

USER: That's ok. Thank you for your time.

ASSISTANT: Thank you for reaching us.