You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,.

USER: I am Amy Thompson.

ASSISTANT:  What help do you want to seek from us?

USER: Actually, we planned to attend the marriage function but due to bad weather conditions I need to change my recent reservation to other date. Could you please help me in changing my previous reservation?

ASSISTANT: Sure, I can help you in that. Please wait, let me check your reservation status.

USER: Sure.

ASSISTANT: Sorry Thompson, there is no active reservation on your name to change it.

USER: No problem, thank you for your valuable information.

ASSISTANT: Thanks for choosing us.