You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Frank Roberts.

ASSISTANT: How can I assist you at this moment?

USER: I want to cancel my flight ticket, due to some problems I am unable to travel those dates so can you help me with that?

ASSISTANT: Sure, I am happy to help you with that.

USER: Thank you.

ASSISTANT: Please wait a moment to check your reservation status.

USER: Ok.

ASSISTANT: Sorry Frank Roberts, no reservation has found under your name to cancel.

USER: Oh! It's ok no problem. Thank you for your information.

ASSISTANT: Thank you for choosing us, have a good day.