You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I am Rachel Davis. I want to book a flight ticket from IAD to DTW. Could you help me in booking?

ASSISTANT: Please mention your travelling dates?

USER: My travelling dates are from April 29 to May 01.

ASSISTANT: There is a flight with single connection and the price is 100 in Frontier airlines, can I proceed with the reservation?

USER: Yes, please proceed.

ASSISTANT: Your ticket has been reserved with the flight number 1004.

USER: Thank you for helping me.

ASSISTANT: Thank you for booking flight ticket with our service.