You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Samuel Roberts, owing to an emergency I want to cancel my ticket. Can you help me?

ASSISTANT: Sure, please wait for a while.

USER: Sure.

ASSISTANT: We found your reservation. Would you like me to cancel your reservation?

USER: Yes, cancel it.

ASSISTANT: Sure. Successfully your reservation is cancelled.

USER: Thank you for your help.

ASSISTANT: Thank you and have a nice day.