You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Jennifer Mitchell.

ASSISTANT:  Jennifer Mitchell. How can I help you?

USER: I have client meeting in my office. So, can you please help me in cancelling my recent reservation?

ASSISTANT: Sure Jennifer Mitchell.

USER: Ok.

ASSISTANT: Sorry to inform that there is no reservation by the name  Jennifer Mitchell.

USER: Ok, thank you for your information.

ASSISTANT: Thank you for contacting us.