You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How could I assist you today?

USER: I have to cancel my reservation due to I am unable to catch the flight on my travelling dates. So please cancel my reservation.

ASSISTANT: Sure, may I know your name please?

USER: Thank you. Myself Stephen Adams.

ASSISTANT: Please give me a moment.

USER: Sure, take your time.

ASSISTANT: There is no reservation found with your given name.

USER: Oh! It may not be booked properly due to server issues while booking. Anyway, thank you for your time.

ASSISTANT: Thank you for choosing us.

USER: Most welcome.