You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I have to change my travelling dates in my reservation due to my planned event got postponed. So please help me with that.

ASSISTANT: Sure, will you mention your name for checking the reservation status?

USER: Thank you. Myself Michael Allen.

ASSISTANT: Please give me a moment.

USER: Sure, take your time.

ASSISTANT: Thanks for waiting, there is no reservation found under your name.

USER: Oh! It may not be booked properly due to server issues while booking. Anyway, thank you for your time.

ASSISTANT: Welcome, have a great day.