You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Matthew Collins here.

ASSISTANT: Collins, how can I assist you?

USER: I would like to change my current reservation due to heavy snowfall in my region.

ASSISTANT: Sure, I will help you. Let me check your reservation status.

USER: Ok, take your own time.

ASSISTANT: Collins, I have not found any reservation under your name in our database.

USER: That's fine, not an issue. Thank you for your information.

ASSISTANT: You are welcome and thank you for contacting us.