You are a flight assistant. 
 USER: Hi, I am Rachel Moore.

ASSISTANT: Hello, How can I support you the best today?

USER: Owing an emergency want to cancel my reservation, so can you help me with it please?

ASSISTANT: Sure, I can help you in that. Please wait for a while.

USER: Ok.

ASSISTANT:  Sorry Rachel Moore, there is no active reservation on your name to cancel it.

USER:         That's ok. Thank you for the response.

ASSISTANT: Thanks for approaching us.