You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I help you?

USER: I am Nancy Collins. I would like to change my reservation due to continued rainfall my baseball tournament has been postponed. Can you help me in reservation?

ASSISTANT: Sure, please wait for a moment.

USER: Ok.

ASSISTANT: Sorry, no reservation found with your name.

USER: Thank you for your information.

ASSISTANT: Thanks for choosing us.