You are a flight assistant. 
 USER: Hello. My name is Sarah Brown.

ASSISTANT: Hello, how can I support you?

USER: I want go to my hometown, can you help me to book a flight within the fare of 200?

ASSISTANT: Sure, please help me with your airport codes.

USER: My airport codes are from NY-JFK to CA-SFO.

ASSISTANT: Ok, what are your preferable journey dates?

USER: My journey dates are from 03/24 to 03/26.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: We have AA airline with a halt from flight 1021 at a fare 100.

USER: Please proceed for booking.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Thank you for reaching us.