You are a flight assistant. 
 USER: Hello, I'm Helen Wilson.

ASSISTANT: Hello. How may I help you?

USER: This year, I would like to attend entrance exam in Washington, so could you please book a ticket from IAH and IAD.

ASSISTANT: Can you please tell me your journey dates?

USER: I would like to go on 11/30 and return back on 12/02.

ASSISTANT: Please wait a moment, let me check the availability for you.

USER: Ok sure, take your time.

ASSISTANT: Happy to say you that, I found a flight-1022 with single connection and airline is Southwest.

USER: Ok, please proceed for further.

ASSISTANT: your reservation is done.

USER: Thank you.

ASSISTANT: Thank you for reaching us.