You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: Mark Johnson here.

ASSISTANT: Glad to meet you Mark.

USER: I want to book a flight from DFW to LAX, can you please help me in booking a flight ticket?

ASSISTANT: Sure, may I know your journey dates please?

USER: Sure, my travelling dates are from 05/07 to 05/09.

ASSISTANT: Wait a moment please.

USER: Ok, take your time.

ASSISTANT: Spirit airlines is available in you route with the ticket fare of 200, shall I proceed with the booking?

USER: Ok, please proceed with booking.

ASSISTANT: Your ticket is booked with the flight-1002.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.