You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I would like to change my recent reservation because my health condition was not good, can you help me?

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

USER: I am Ashley Scott.

ASSISTANT: Give me a moment.

USER: Sure./.

ASSISTANT: Ashley Scott. I regret to inform that there is no reservation by your name.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us.