You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I oblige you today?

USER: Can you please help me in changing my recent reservation? As my planned trip has been postponed.

ASSISTANT: Sure, please wait.

USER: Sure, I'll wait for your response.

ASSISTANT: Could you please share your name?

USER: Yes, my name is Dorothy Hill.

ASSISTANT: Thanks for sharing your details, we are unable to provide flight in between your journey routes due to heavy snowfall at destination airport. We hardly tried to find your reservation but, no reservation has been found with your name.

USER: That's ok, thank you for giving the information.

ASSISTANT: Your welcome.