You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Owing to an emergency, my planned trip with friends to Yosemite adventure has been cancelled. So I have a request to you to cancel my recent reservation?

ASSISTANT: Sure, I will help you. Please provide me your name?

USER: Sure, I had a existing reservation with name Linda Parker.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: There is no reservation with your name.

USER: Ok, no worries at all. Thanks for your valuable information.

ASSISTANT: Thank you for reaching us.