You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I help you?

USER: I am Benjamin Robinson, Owing to an emergency I want to cancel my reservation. Will you help me in cancelling reservation?

ASSISTANT: Ok, please wait a moment I'll check the details of your reservation.

USER: Sure.

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

USER: Thank you, for your service.

ASSISTANT: Thanks for reaching us. Have a nice day!.