You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Robert Hall.

ASSISTANT: How can I aid you?

USER: Due to some personal work I can not able to travel, so can you help me to cancel my recent reservation?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Hall, we didn't found any recent reservation under your name in our database.

USER: That's fine, not a issue. Anyways, thanks for your information.

ASSISTANT: Than you for reaching us.