You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: Due to bad weather conditions, I cannot attend my meeting. Can you help me to change my existing reservation?

ASSISTANT: Ok, please mention your name?

USER: Sure, my name is Nicholas Jones.

ASSISTANT: Nicholas Jones, please wait.

USER: Ok.

ASSISTANT: There is no flights booking available by your name.

USER: That's ok, thank you for the information.

ASSISTANT: Sorry for the inconvenience. Have a nice day.