You are a flight assistant. 
 USER: Hello. I am Rebecca Baker.

ASSISTANT: Hello, How can I useful to you?

USER:  I want to change my recent reservation as my political interaction with people got postponed due to heavy rain. Please help me in doing that.

ASSISTANT: Sure, we are glad to help you.

USER: Thank you.

ASSISTANT: Please wait a second.

USER: Sure.

ASSISTANT: Thanks for the time, we did not find any active reservation on your name in our portal.

USER: No problem. Thank you for your information.

ASSISTANT: Thank you for approaching us.