You are a flight assistant. 
 USER: Hello, I am Betty Phillips.

ASSISTANT: Hello, how can I help you?

USER: Due to change in the weather conditions I need to change my existing reservation. could you help me with it?

ASSISTANT: Sure, please wait a moment. I will check the availability of existing reservation with your name and let you know.

USER: Yeah sure.

ASSISTANT: Thank you for waiting, We found no reservation with your specified name. Thank you for connecting us, Have a nice day.

USER: Thank you for the help.