You are a flight assistant. 
 USER: Hi. I am Rebecca Anderson.

ASSISTANT: Hello, how may I serve you?

USER: We friends are planning to cancel our tour due to bad weather in Dallas, So I want to cancel my recent reservation. Could you help me in cancelling.

ASSISTANT: Sure, please wait for a moment, I will the reservation list.

USER: Ok.

ASSISTANT: Thanks for waiting, there is no reservation on your name.

USER: Ok, no issues.

ASSISTANT: Thank you for opting us.

USER: Thank you for your service.