You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER:  I am Deborah Robinson want to travel to CA-SFO to attend a live concert from TX-IAH.

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

USER:  Can you book a ticket? Ok, my travel dates are 09/19 and 09/21.

ASSISTANT: Wait a moment please.

USER: Ok.

ASSISTANT: Spirit airlines is available in your route with the ticket fare of 100, shall I proceed with the booking?

USER: Ok, you can proceed.

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

USER:  Thank you for booking.

ASSISTANT: Thank you for choosing us.