You are a flight assistant. 
 USER: Hello, I am John Hall.

ASSISTANT: Hello, how may I help you at this moment?

USER: I would like to go to Dallas World Aquarium in Dallas, so could you please book a ticket for me?

ASSISTANT: Sure. Please send me your travel dates.

USER: I would like to go on 03/20 and return back on 03/22.

ASSISTANT: Please send your airport codes.

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

ASSISTANT: Please hold on for a moment.

USER: Ok, ensure it is a single connecting flight.

ASSISTANT: There is a flight available with AA airline, shall I book it?

USER: Ok, please proceed for further.

ASSISTANT: Your booking is done with flight number 1029. Happy journey.

USER: Thank you.

ASSISTANT: You are welcome. Thank you for reaching us.

USER: Welcome.