You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Jeffrey Jackson here.

ASSISTANT: How may I help you today?

USER: I planned a trip to New York, but there is heavy snow fall there, so please help me in changing my recent reservation.

ASSISTANT: Yes sure, I am happy to help you. Give me a moment.

USER: Ok fine.

ASSISTANT: I am sorry to infirm you there is no reservation found on you name.

USER: No problem, than you for your information.

ASSISTANT: That's fine, thank you for contacting us.Have a nice day.

USER: Most welcome.