You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: Please change my existing reservation owing to an emergency.

ASSISTANT: Sure, may I know your name?

USER: My name is Ryan Parker.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: We found a reservation on your name, can you please share your travel details?

USER: Travel dates are Dec, 2 and Dec, 4.

ASSISTANT: May I know your airport codes?

USER: Airport codes are AUS and BOS.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: We found a connecting flight for you, flight details are as UA airline, fare 100 and flight number 1017. Shall I proceed?

USER: Please book a flight.

ASSISTANT: Your booking has been confirmed.

USER: Thanks.

ASSISTANT: Thank you for connecting with us.