You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Matthew Baker here.

ASSISTANT: How can I assist you at this moment?

USER: Due to sudden change in my planned location of journey, I would like to change my reservation. Can you please help me out with that?

ASSISTANT: Sure, I will help you with this. Please be on hold for a moment.

USER: Thank you, take your time.

ASSISTANT: Matthew Baker, there is no active reservation found under your name in our database.

USER: Oh! I think the ticket was not booked due to server issue. Anyway, thank you for the information.

ASSISTANT: Thank you for contacting us.