You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I need to change my reservation due to urgent meeting, can you help me?

ASSISTANT: Sure, can you please let me know your name?

USER: I am Edward Wright.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT:  Edward Wright. I regret to inform that there is no reservation by your name.

USER: That's ok. Thank you for your help.

ASSISTANT: Thank you very much.