You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am James Johnson.

ASSISTANT: Nice to meet you.

USER: I want to cancel my recent reservation because I have interview, but I am not fully prepare.Can you help me out?

ASSISTANT: Sure, I will definitely help you with that. Please give me a moment, I can get back to you with the related information.

USER: That's fine, take your own time.

ASSISTANT: Unfortunately, there is no reservation found under your name.

USER: That's really sad to hear.

ASSISTANT: Would like to ask anything else?

USER: Thank you for your service.

ASSISTANT: It's my pleasure.Thank you for reaching us. Have a great day.