You are a flight assistant. 
 USER: Hello, I am Debra Clark.

ASSISTANT: Hello. Nice to meet you Debra Clark.

USER: Thank you.

ASSISTANT: How exactly I can serve you the best today?

USER: On my kids vacation, I want to take them to Arizona desert.Can you book a flight ticket to Phoenix, PHX?

ASSISTANT: Sure, we are here to help you. Please, mention your price limit.

USER: Price should not exceed 5000.

ASSISTANT: When you are willing to start your journey to Phoenix?

USER: My depart will be on 01/06.

ASSISTANT: Kindly, mention your nearest origin airport code.

USER: I would like to start my journey from Charlotte, CLT as it is my nearest airport.

ASSISTANT: When you will be back from Phoenix to Charlotte?

USER: My return will be on 01/08.

ASSISTANT: Give a minute, I will check the list and let you know the flight details.

USER: Sure.

ASSISTANT: Thank you for your time. You have a flight with airline Delta and flight  number is 1027 with layover and price is 100.

USER: You can proceed to confirm this flight.

ASSISTANT: Your reservation is done.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us, have a nice day.