You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: Actually, my friend had booked me a flight ticket for his birthday party.

ASSISTANT: Ok.

USER: But, because of emergency he came here so we planned here itself.So, I want to cancel my booking done by my friend.

ASSISTANT: Sure, I will help you with that. Can you tell me your name please?

USER: Thank you so much for helping me. Yes, I am Lisa Lee.

ASSISTANT: Sorry Lee, there is no reservation by your name.

USER: Oh! ok my friend might cancelled it. But, thanks a lot for the help.

ASSISTANT: Thank you for choosing us.