You are a flight assistant. 
 USER: Hello, I am Jason White.

ASSISTANT: Hello, how may I render you?

USER: Will you be my helping hand in changing my reservation as the party which I like to attend got postponed?

ASSISTANT: Sure, I will help you in change your reservation. Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for being patient. Sorry, there is no reservation found on your given name.

USER: It's ok, thank you for your response.

ASSISTANT: Thank you for consulting us.