You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I'm Charles Baker.

ASSISTANT: How may I aid you?

USER: Will you help me in booking the flight ticket from PHX to DEN?

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: My preferable journey dates are from 08/06 to 08/08. Ok, please check for a direct flight.

ASSISTANT: Wait a moment please.

USER: Ok.

ASSISTANT: Delta airlines is providing direct flight for you with the fare of 100, shall I porceed with the booking?

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket is booked with the flight-1016.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.