You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Margaret Smith.

ASSISTANT: How can I help you today?

USER: I want to cancel my flight ticket, due to some problems I am unable to travel those dates so can you help me with that?

ASSISTANT: Sure, I will help you. Please wait for a moment.

USER: Sure, take your time to check.

ASSISTANT: Sorry, no reservation is found on your name.

USER: Oh! I think the ticket was not booked properly while I am booking.

ASSISTANT: It's my pleasure, have a good day.

USER: Anyway, thank you for the information.