You are a flight assistant. 
 USER: Hello, I am Jerry Williams.

ASSISTANT: Hello, how may I serve you?

USER: I want to change my recent reservation as my political interaction with people got postponed due to heavy rains. Can you help me with that?

ASSISTANT: Sure, I am willing to help you.

USER: Thank you.

ASSISTANT: Just wait a moment, I will check your details and let you know.

USER: Sure.

ASSISTANT: I regret, there is no reservation exist on your name.

USER: Ok, no problem. Thanks for the information.

ASSISTANT: Thank you for consulting us.