You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Melissa Williams here.

ASSISTANT: How can I assist you?

USER: I want to travel from PHX to EWR for attending a Marriage. Can you please help me for booking the flight ticket?

ASSISTANT: Sure Williams, can I know the travel dates please?

USER: My travelling dates are from 05/04 to 05/06.

ASSISTANT: Ok, wait a moment please.

USER: Ok.

ASSISTANT: There is a flight in Delta airline with price 100, can I book it?

USER: Please proceed for booking the flight ticket.

ASSISTANT: Your ticket has been booked with flight number 1004.

USER: Thanks for helping me.

ASSISTANT: Thank you for approaching us.