You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Rachel Nelson.

ASSISTANT: In which way I can assist you at this moment?

USER: I would like to cancel my recent reservation, can you help me with this?

ASSISTANT: Sure, I am gleeful to help you with that. Please wait a moment to check your previous reservation.

USER: Sure, take your own time to check the reservation.

ASSISTANT: We regret to inform you that there is no reservation on your name in our records.

USER: That's not an issue, thanks for your information anyways.

ASSISTANT: Thank you for reaching to our services, hope you have a great day.