You are a flight assistant. 
 USER: Hi,. I am Brenda Wilson.

ASSISTANT: Hello. How can I serve you?

USER: I want to change my reservation, can you help me with that?

ASSISTANT: Sure. Give me a minute.

USER: Sure.

ASSISTANT: Thanks for your time. We found a reservation by this name. Can I know your updates journey details?

USER: That's very nice to hear, My new journey dates are 09/20 and 09/22. My airport codes are Orlando, FL - MCO and Austin, TX - AUS.

ASSISTANT: Please wait a while.

USER: Sure.

ASSISTANT: We found a UA airline, flight number:1004 and the price is 100.

USER: Please proceed.

ASSISTANT: Your flight ticket has been reserved.

USER: Thanks for your kind service.

ASSISTANT: Thank you for choosing us.