You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Mark Jones.

ASSISTANT: How may I assist you?

USER: Can you please reserve me a flight ticket from Chicago, IL - ORD to San Francisco, CA - SFO?

ASSISTANT: How much can you afford for flight ticket?

USER: I can afford up to 1000.

ASSISTANT: When you are planning to depart and arrive?

USER: My trip dates are 01/14 - 01/16.

ASSISTANT: We found an airline Hawaiian of flight 1018 and price is 100. Can I proceed with the booking?

USER: Please reserve.

ASSISTANT: Your seat has been reserved.

USER: Thank you.

ASSISTANT: Thank you for opting us.