You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: Can you help me to cancel my recent reservation because my trip dates are got postponed?

ASSISTANT: Sure, could I have your name please?

USER: I am Pamela Smith.

ASSISTANT: Ok, please allow me a moment.

USER: Sure.

ASSISTANT: I have found your reservation and I cancelled it.

USER: Thank you.

ASSISTANT: Thank you for choosing us, have a great day.