You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Scott Green here.

ASSISTANT: How may I help you today?

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

ASSISTANT: Sure, I am glad to help you with that.

USER: Thank you.

ASSISTANT: Can you please wait a moment?

USER: Sure, take your time to check.

ASSISTANT: Sorry for the trouble caused to you, there is no reservation found on your name to change the details.

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

ASSISTANT: You are most welcome. Thank you for reaching us. Have a nice day.