You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Jennifer Martin.

ASSISTANT: How may I assist you today?

USER: I would like to travel from IAD to DEN, could you help me out?

ASSISTANT: Sure, I can help you with that. May I know your preferable travel dates please?

USER: My preferable dates are from 10/19 to 10/21.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: AA airlines is providing a flight on that route with travel charge of 300, shall I proceed for booking?

USER: Please proceed with the booking.

ASSISTANT: I have successfully booked your ticket with flight-1022, have a safe journey.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.