You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, good evening.

USER: Good evening.

ASSISTANT: What can I do for you?

USER: My business trip has been postponed.Can you please help me for cancelling the recent reservation?

ASSISTANT: Sure, may I know your name to check your reservation details?

USER: Sure, my name is Kathleen Thompson.

ASSISTANT: I found your reservation and I have successfully cancelled that.

USER: Thank you for your help.

ASSISTANT: Thank you so much for reaching us.