You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, what kind of service are you seeking from us?

USER: Can you please help me with changing my recent reservation?

ASSISTANT: Sure, may I know your name to check the reservation status?

USER: My name is Amanda Davis.

ASSISTANT: Ok, please wait for a minute.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found on your name to change.

USER: That's ok, thanks for the help.

ASSISTANT: Thank you for choosing us.