You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I want to book a ticket from HOU to DCA, can you help me?

ASSISTANT: Ok, may I know your trip dates to get a flight for you?

USER: My travel dates are 12/24 and 12/26.

ASSISTANT: May I know your name?

USER: I am Michael Jackson.

ASSISTANT: Sorry, there is no flight found on your name.

USER: No problem, thanks for checking.

ASSISTANT: Thanks for choosing us.