You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Mark Jones.

ASSISTANT: How may I aid you?

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

ASSISTANT: Sure, please be on hold.

USER: Sure.

ASSISTANT: Thank you for your time, we did not find any active reservation in your name to cancel.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for reaching us.