You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Karen Jones.

ASSISTANT: Nice to meet you Jones, how can I assist you at this moment?

USER: Due to some weather conditions I would like to change my booking which I have done previously. Can you help me?

ASSISTANT: Sure, I will help you with that. Please give me a moment to check an existing reservation status.

USER: Ok.

ASSISTANT: Thank you for waiting. Sorry Jones, I did not came across your name in the reservation list to change it.

USER: Oh it's ok.

ASSISTANT: Thank you for choosing us.

USER: Thank you for your information.

ASSISTANT: You are welcome. Have a good day.