You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I support you today?

USER: Owing to an emergency, I need to change an existing reservation. Can you help me with this?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: It will be helpful for me, if you share me your good name to check the reservation list?

USER: I am Raymond Moore.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for your time, there is no active reservation found in your name to change.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for choosing us.