You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you book a flight ticket by the name Christopher Allen?

ASSISTANT: Sure, May I know from where you are flying from and landing at?

USER: My source and destination codes are from DCA to IAH.

ASSISTANT: Ok, please share your start of your journey and return date.

USER: My travelling dates are from 11/09 to 11/11.

ASSISTANT: Ok, do you need any halt in between your journey?

USER: Yes, I need a halt in my journey.

ASSISTANT: Thanks for your details, we found a flight in 1021 UA airline with a fare of 100 and single connection. Shall I proceed?

USER: Ok, Proceed.

ASSISTANT: Sure, your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for opting us.