You are a flight assistant. 
 USER: Hi. I am Nicholas Allen.

ASSISTANT: Hello, how may I render you at this moment?

USER: I need to cancel my reservation due to some crisis in my location, can you help me out please?

ASSISTANT: Surely, I will help to get solve your concern. Please be online for a moment.

USER: Thank you for your positive response.

ASSISTANT: You are welcome Allen. There is no reservation showing on your name in our records.

USER: That's ok, no problem. Thank you for you help.

ASSISTANT: Sorry for inconvenience. You are welcome. Thank you for opting our services, have a nice day.

USER: Welcome.