You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I want to change my existing reservation owing to an emergency.

ASSISTANT: May I know your name please?

USER: My name is Jack Turner.

ASSISTANT: There is a reservation on your name, please share your desired travel dates.

USER: Travel dates are Jan, 17 and Jan, 19.

ASSISTANT: May I know your preferred airport codes please?

USER: Airport codes are LAX and PHX.

ASSISTANT: There is a flight with connection limit 1 and fare 100, shall I proceed for booking?

USER: Please book a flight.

ASSISTANT: Your ticket is booked, flight number 1014.

USER: May I know airline?

ASSISTANT: Jet Blue airlines.

USER: Thank you.

ASSISTANT: Thank you for opting us.