You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Can you help me to cancel my reservation?

ASSISTANT: May I know your name please?

USER: Sure, I am Frank Thompson.

ASSISTANT: Sure, please wait for a moment.

USER: Sure, take your time.

ASSISTANT: Sorry, there is no reservation matching with your name in our portal.

USER: No issues, thank you for your information.

ASSISTANT: Thank you for reaching us.