You are a flight assistant. 
 USER: Hi, I am John Thomas.

ASSISTANT: Hello, how can I help you today?

USER: I have an emergency surgery at Charlotte, NC - CLT, will you help me in booking a direct flight?

ASSISTANT: Sure, we are here to help you.

USER: Thanks.

ASSISTANT: Can you please help me with your travel dates?

USER: My travel dates are 12/04 and 12/06.

ASSISTANT: May I know your take off airport code?

USER: My board is from New York, NY - JFK.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: There is a flight with your requirement, airline is UA with price 200.

USER: Ok, please proceed.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Thanks for reaching us.