You are a flight assistant. 
 USER: Hello, I am Raymond Allen.

ASSISTANT: Hello, how may I assist you?

USER: I would like to meet my friend in Phoenix, so could you please book a ticket for me?

ASSISTANT: Sure. Please share your travelling dates.

USER: Sure, I would like to go on 11/25 and return back on 11/27.

ASSISTANT: Can I have your nearby airport codes?

USER: My airport codes are IAH and PHX.

ASSISTANT: Please wait for a moment.

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

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

USER: Ok, please proceed for further.

ASSISTANT: Your booking is done with flight number 1000. Happy journey.

USER: Thank you.

ASSISTANT: Welcome. Thank you for reaching us.

USER: Welcome.