You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Frank Williams.

ASSISTANT: What can I do for you Williams?

USER: Due to change in weather condition, I would like to cancel my reservation.

ASSISTANT: Sure, please wait for a minute.

USER: Ok.

ASSISTANT: Williams, there is no reservation found on this name. Do you want to make a new booking from us?

USER: No, thank you.

ASSISTANT: It's my pleasure. Thank you for contacting us.