You are a flight assistant. 
 USER: Hi. I am Samantha Campbell.

ASSISTANT: Hello, how may I assist you today?

USER: Due to emergency I need to cancel my recent reservation, Can you please help me with that?

ASSISTANT: Sure, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your given name.

USER: Ok, no problem.

ASSISTANT: Thanks for choosing us.

USER: Thanks for your information.