You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,. How may I serve you the best today?

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

ASSISTANT: Sure, I am here to do that. Can you provide me your good name please?

USER: My name is Edward Smith.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Thanks for your time, we found a reservation in your name. Please share me your new journey details?

USER: Please book a ticket from PHL to LAX.

ASSISTANT: May I know your trip dates?

USER: My trip dates are from 04/09 to 04/11.

ASSISTANT: There is a connecting flight with price of 100 and 1029 flight number. Shall I proceed?

USER: Please book a flight.

ASSISTANT: Your seat has been reserved with Jet Blue airline.

USER: Thanks.

ASSISTANT: Thank you for choosing us.