You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Joseph Carter want to attend my cousin's marriage at San Francisco, can you book a ticket within the fare of 200?

ASSISTANT: Sure, may I know your airport codes please?

USER: Yes, I would like to have my journey from BOS to SFO.

ASSISTANT: Ok, now can you provide your travel dates please?

USER: Sure, my travelling dates will be 03/23 and 03/25.

ASSISTANT: Ok, please wait for a moment.

USER: Ok.

ASSISTANT: Thanks for waiting. I have found UA airlines which flies with one connection.

USER: Ok, proceed with my booking.

ASSISTANT: Your flight ticket has been confirmed now.

USER: Thank you.

ASSISTANT: Thank you.