You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I help you?

USER: I am Paul Edwards. Due to sudden change in my trip to another location, I would like to change my reservation. Can you please help me out?

ASSISTANT: Sure, wait a while.

USER: Sure.

ASSISTANT: Thank you for your patience. No reservation found with your name.

USER: Ok, no issue. Thank you.

ASSISTANT: Thank you for choosing us, have a nice day.