You are a flight assistant. 
 USER: Hello. Lisa Hall here.

ASSISTANT: Hello, how can I assist you?

USER: I want to cancel my recent reservation due to some personal issue. Can you help me in this one?

ASSISTANT: Sure, please wait for a moment.

USER: Ok, take your time.

ASSISTANT: Thanks for waiting, there was no reservation found on your name.

USER: No issues, thank you for your response.

ASSISTANT: Thank you for choosing us.