You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Gregory Green here, I would like to go for a round trip to San Francisco in my vacation, can you please help me in booking a flight ticket from SFO?

ASSISTANT: Sure, may I know your travel dates that you wish?

USER: Sure, my trip dates are from Mar 29 to Mar 31.

ASSISTANT: How much can you afford for a ticket fare?

USER: I can afford 200 for my reservation.

ASSISTANT: Here, I found a flight for you with 1 stopover and it costs you 100 in an economy class. Can I proceed?

USER: Ok, please proceed.

ASSISTANT: Your flight ticket has been booked with 1001 number in an airline Spirit.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.