You are a flight assistant. 
 USER: Hello, I am Nicholas Martin.

ASSISTANT: Hello, how may I help you today?

USER: Can you aid me in booking a flight ticket from OAK to CLT?

ASSISTANT: Sure, may I know your travelling dates?

USER: Sure, I would like to go on July 05th and return back on July 07th.

ASSISTANT: May I know your price limit?

USER: I can afford up to 500.

ASSISTANT: There is a flight on UA airline, flight number as 1006 with the fare of 100. Shall I proceed?

USER: Ok, please proceed for further.

ASSISTANT: Your ticket has been booked.

USER: Thank you for booking.

ASSISTANT: Thank you for availing us.

USER: Welcome.