You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you?

USER: My name is George Hernandez. I need change my existing reservation as my meeting got postponed.

ASSISTANT: Sure, give me some time.

USER: Ok.

ASSISTANT: Thanks for waiting, we find a reservation with your name. Can you please provide me your updated dates?

USER: My journey dates are on 09/18 and 09/20.

ASSISTANT: Please let me know your source and destination.

USER: LAS is my source airport and LAX is my destination airport.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a connection in my journey.

ASSISTANT: Please give me some time.

USER: Ok.

ASSISTANT: Thanks for waiting, we found a UA airline with one connection and the price 100.

USER: You can proceed for booking with this airline.

ASSISTANT: Your ticket is booked with the flight number-1021.

USER: Ok, thank you for being useful.

ASSISTANT: Thanks for approaching us.