You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I amend you today?

USER: I made a reservation earlier to go for shopping in Houston, but it has been cancelled. Can you please change my reservation?

ASSISTANT: Ok, may I know your name to track your details?

USER: Sure, I am Pamela Walker.

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: Thank you for being on hold, no reservation was found on your name in our database.

USER: Ok, Thank you for providing information.

ASSISTANT: Thank you for consulting us.