You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you?

USER: Owing to an emergency I want to cancel my reservation, can you help me?

ASSISTANT: Sure, I am here to provide you the service related to cancellation of ticket. Can you please tell me your name?

USER: I am Donald Edwards.

ASSISTANT: Ok, can you please give me a minute?

USER: Sure.

ASSISTANT: Sorry to inform you that, I haven't found any reservation with the name Donald Edwards to cancel the ticket.

USER: No problem, thanks for checking.

ASSISTANT: Most welcome, thank you for choosing our agency.