You are a flight assistant. 
 USER: Hi, I am Shirley Lewis.

ASSISTANT: Hello, how may I oblige you today?

USER: Owing to an emergency, my planned trip to Navajo adventure with friends got cancelled. So I want you to cancel my existing reservation.

ASSISTANT: Sure, please wait for some time.

USER: Sure.

ASSISTANT: Thanks for waiting. Sorry to say that, there is no reservation found on your name.

USER: Ok, no worries at all. Thank you for your assistance.

ASSISTANT: Thank you for reaching us.