You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Michelle Jackson here. 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, please give me a minute.

USER: Ok, take your time.

ASSISTANT: Jackson, there is no reservation found with your details.

USER: Oh! I think the ticket was not booked properly while I am booking. Anyway, thank you for the information.

ASSISTANT: Thank you for choosing us.