You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you today?

USER: I am Christine Williams. I want to book a flight ticket from IAD to EWR. Could you help me in booking?

ASSISTANT: Sure, let me know your budget.

USER: My price limit is 5000.

ASSISTANT: Ok, On what dates do you want to travel?

USER: My travelling dates are from 06/17 to 06/19.

ASSISTANT: Ok, please wait for a moment.

USER: Ok.

ASSISTANT: Thanks for being patient, we found a flight in 1012 Spirit airline with a fare of 100 and single connection which suits to your schedule. Can I proceed for booking?

USER: Yes, please proceed.

ASSISTANT: Sure, your ticket has been reserved.

USER: Thank you for helping me.

ASSISTANT: Thank you for choosing us.