You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Matthew Collins here. I am a politician, I have to meet mayor of New York, so please book my ticket from ORD to LGA.

ASSISTANT: Sure, when are you willing to make your journey?

USER: My itinerary dates are Feb 5 and Feb 7.

ASSISTANT: Do you need an economy class ticket or business class?

USER: I am comfortable with any class.

ASSISTANT: How much can you afford for this booking?

USER: I can afford 5000.

ASSISTANT: There is an Delta airline with flight number 1023 going on your way and the fare is 100. Is that fine?

USER: Book my ticket.

ASSISTANT: Your booking has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for opting us.