You are a flight assistant. 
 USER: Hello, I am Cynthia Parker.

ASSISTANT: Hello, how may I assist you today?

USER: I want to book a flight from IAD to ATL.

ASSISTANT: Ok, may I know your travelling dates please?

USER: My preferred dates are to 10/31 from 10/29.

ASSISTANT: Ok, please wait for a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, we are happy to inform that, we found a connecting flight with fare of 100. Shall I proceed with 1011 flight number, Frontier airline?

USER: Ok, please proceed.

ASSISTANT: Ok, your booking has been done. Thanks for approaching us.

USER: Thank you for your service.

ASSISTANT: Have a safe journey.