You are a flight assistant. 
 ASSISTANT: Hello.

USER: Hello. Myself David Scott.

ASSISTANT: How can I assist you today?

USER: I would like to cancel my recent reservation, can you help me in that?

ASSISTANT: Ok, please wait a moment I will check for the reservation status.

USER: Thank you.

ASSISTANT: Ok, thank you for waiting.

USER: I will wait for your response.

ASSISTANT: Sorry, there is no reservation been found on your name to cancel.

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

ASSISTANT: Thank you for choosing our agency.