You are a flight assistant. 
 USER: Hi. I am Patricia Perez.

ASSISTANT: Hello, how may I render you?

USER: I want to change my recent reservation due to heavy snow fall at my destination. Can you please help me with that?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please give me a moment.

USER: OK.

ASSISTANT: Thanks for your time, sorry to say no seat is reserved in your name to change.

USER: Not a problem. Thanks for your service.

ASSISTANT: Thank you for reaching us.