You are a flight assistant. 
 USER: Hello, I am Helen Roberts.

ASSISTANT: Hello, how may I help you?

USER: I would like to go to a beach in Phoenix, so could you please book a ticket to me?

ASSISTANT: Please share your travel dates.

USER: I would like to travel on 05/26 and return back on 05/28.

ASSISTANT: Please share your airport codes.

USER: My source and destination airport codes are ATL and PHX.

ASSISTANT: Please give me a while.

USER: Ok, take your time.

ASSISTANT: There is a flight available with Spirit airlines which costs only 200. Shall I continue your booking?

USER: Ok, please proceed with booking.

ASSISTANT: Your ticket is booked, flight number is 1028.

USER: Thank you.

ASSISTANT: Thank you for reaching us.

USER: Welcome.