You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am Daniel Miller, can you help me to book a connecting flight to DTW?

ASSISTANT: Ok, may I know your travelling dates to find a flight for you?

USER: My travelling dates are Mar 04 and 06.

ASSISTANT: Fin, let me know your source code too.

USER: Please book evening flight from HOU.

ASSISTANT: May I know your other preferences?

USER: No.

ASSISTANT: Sorry, no flight is available for you on your route.

USER: No issues, thank you.

ASSISTANT: Thanks for choosing us.