You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Larry walker here.

ASSISTANT: Walker, how may I assist you?

USER: Can you please help me in cancelling my recent reservation? As I have an important meeting to attend in my office on my planned trip dates.

ASSISTANT: Sure, I am glad to help you. Please first let me check your reservation status.

USER: Sure, take your time.

ASSISTANT: Walker, I found your reservation. Shall I cancel it?

USER: Yes, please cancel it.

ASSISTANT: I have cancelled your reservation.

USER: Thank you so much for your help.

ASSISTANT: You are welcome, thank you for choosing us.