You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: My plan to visit a function got postponed, will you help me to cancel my recent reservation?

ASSISTANT: Sure, we will help you.

USER: Thanks.

ASSISTANT: May I know on which name the ticket has been reserved?

USER: I made a reservation on the name of Joshua Davis.

ASSISTANT: Please wait for a while, I will check the reservation list and revert to you.

USER: Sure.

ASSISTANT: Thank you for waiting.

USER: Ok.

ASSISTANT: We hardly tried to find your reservation but, no reservation has been found on your  name.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.