You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Thomas Johnson.

ASSISTANT: How can I guide you?

USER: I need to cancel my reservation due to some personal issues.So can you help me with cancellation of my reservation?

ASSISTANT: I will help you out from this.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, no active reservation found on your name to cancel.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us.