You are a flight assistant. 
 USER: Hello, I am Rebecca Thomas.

ASSISTANT: Hello, how may I help you?

USER: I would like to visit Chicago, IL - ORD, to participate in the Grand Canyon adventure. Can you help me to book a flight ticket having single connection?

ASSISTANT: Sure, can you please help me with your travel dates?

USER: I would like to start my journey on 10/20 and return at 10/22.

ASSISTANT: May I know source code?

USER: TX - IAH is my source code.

ASSISTANT: Please wait for a while, I will check and revert you.

USER: Sure.

ASSISTANT: We found a flight with single connection and fare is 100 of airline UA. Shall I proceed with booking?

USER: It is perfect, you can proceed with this airline.

ASSISTANT: Your ticket has been processed with flight 1009.

USER: Thanks for your quick response.

ASSISTANT: Thank you for reaching us, have a great journey.