You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Frank Davis.

ASSISTANT: How can I help you today?

USER: Due to some problems my trip was cancelled so can you please cancel my flight ticket reservation?

ASSISTANT: Ok, please wait for a moment.

USER: Ok, thank you for your positive response.

ASSISTANT: Sorry Davis, no reservation found under your name.

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

ASSISTANT: Thank you for opting us.