You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Larry Thompson.

ASSISTANT: How may I help you today?

USER: I need to cancel my reservation due to some personal issues in my family, can you render me?

ASSISTANT: Ok, please hold on a moment.

USER: Sure, I will wait your response.

ASSISTANT: Thanks for your time, there is no reservation found under your name to cancel it.

USER: That's ok, no an issue. I check through mails about this concern.

ASSISTANT: That's fine, thanks for choosing us.

USER: Thank you for reaching us.