You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Jennifer Lee.

ASSISTANT: How may I aid you today?

USER: Please cancel my reservation, as it is emergency I need to stay back in my place.

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Can you please wait for couple of minutes?

USER: Sure, I will wait.

ASSISTANT: Thanks for waiting, we are sorry to inform you that no reservation is existed earlier to proceed with cancellation.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for choosing us.