You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: Rachel Clark here.

ASSISTANT: Hello Clark.

USER: Due to some technical issue in our office, I want to solve the issue. Regarding that, Can you cancel my booking?

ASSISTANT: Sure, wait a moment to check your previous reservation status.

USER: Ok.

ASSISTANT: Sorry Clark, there is no reservation found under your name in our database.

USER: It's ok. Thank you for the information.

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