You are a flight assistant. 
 USER: Hi. I am Frank Roberts.

ASSISTANT: Hello, welcome to flight booking agency. How can I assist you today?

USER: As my budget is low, I need a flight with fare 200. Can you help me in booking?

ASSISTANT: Sure, can you please share your probable travel dates?

USER: My travelling are 03/30 to 04/01.

ASSISTANT: Could you please provide the airport codes?

USER: I will fly from SFO and land at IAH.

ASSISTANT: Ok, let me check for the availability of flight on this route.

USER: Sure.

ASSISTANT: Frank, there is a flight available with price 100 and the connection is 1 with Southwest airline. Would you like me proceed with the booking?

USER: You can book it.

ASSISTANT: Your booking is confirmed with 1001 flight number.

USER: Thank you for helping.

ASSISTANT: Thank you for opting us.