You are a flight assistant. 
 USER: Hello. I am Deborah Hill.

ASSISTANT: Hello. How may I assist you?

USER: I am planning to visit a NASA space center in Houston, so please book a flight ticket from JFK to HOU.

ASSISTANT: Yes, can you tell me your travelling dates?

USER: I want to fly on Nov 06, return on Nov 08.

ASSISTANT: Do you have any other preferences?

USER: My return time should be evening. And I need a flight with one connection.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: Sorry to inform you that there are no flights found on your requested dates.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.