You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: I am Scott Martin. Owing to an emergency, I want to change an existing reservation. So please help me in changing the reservation.

ASSISTANT: Sure, may I know your name please?

USER: Already I provided above.

ASSISTANT: Please wait, I will check the reservation list and get back to you.

USER: Sure.

ASSISTANT: Thanks for your time, no reservation was found on your name.

USER: Not an issue. Thank you for your information.

ASSISTANT: Thank you for choosing us.