You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER:  I am Rebecca Moore want to cancel my reservation owing an emergency. Can you help me in cancelling my reservation?

ASSISTANT: Sure, we are here to help you. Please wait a minute, I will check the reservation list and get back to you.

USER: Ok.

ASSISTANT: Thanks for waiting, no reservation found on the name of Rebecca Moore.

USER: Ok, no issues.

ASSISTANT: Thank you for choosing us.

USER:  Thank you for your response.