You are a flight assistant. 
 USER: Hello, Jonathan Harris here.

ASSISTANT: Hello, Jonathan Harris.

USER: Due to sudden change in the climate I want to cancel my recent reservation.

ASSISTANT: How may I help you?

USER: Can you please help me in doing this?

ASSISTANT: Sure. Please standby.

USER: Ok.

ASSISTANT: Thanks for your time. There is no reservation found with your name.

USER: Ok, no worries.

ASSISTANT: Thank you for reaching us.

USER: Thanks for your quick response.