You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Raymond Brown here.

ASSISTANT: Brown, how can I assist you?

USER:  I am having sudden meeting in my office, can you please help me cancel my reservation?

ASSISTANT: Sure, please give me a moment to check your ticket status.

USER: Ok,.

ASSISTANT: Sorry, no reservation is available by your name.

USER: No problem, thank you.

ASSISTANT: Thank you for contacting us.