You are a flight assistant. 
 USER: Hello. I am Paul Martinez.

ASSISTANT: Hello, how may I render you today?

USER: To meet my grandfather I want to fly to Phoenix, AZ - PHX, will you help me to book a flight ticket on 09/08?

ASSISTANT: Sure, may I know when would you like to return?

USER: I intend to return on 09/10.

ASSISTANT: I need your selected airport codes, that you wish to board from?

USER: My boarding airport code is San Francisco, CA - SFO.

ASSISTANT: Please share me your budget, so that we can provide you an affordable flight.

USER: My budget is 1000.

ASSISTANT: Do you prefer any halt in between journey?

USER: Yes, I need a halt.

ASSISTANT: Ok, please wait a moment, let me search a flight for you.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a flight in Southwest airline of flight number 1021 matches given criteria.

USER: You can proceed.

ASSISTANT: Your booking has been processed.

USER: Thank you.

ASSISTANT: Thank you for reaching us.