You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Please help me to book a flight ticket from DTW to LAX.

ASSISTANT: May I know your travelling dates?

USER: My trip dates are from Feb, 04 to Feb, 06.

ASSISTANT: Do you need connecting flight?

USER: I need a single connecting flight.

ASSISTANT: Can I know your name please?

USER: I am Karen Martinez.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Sorry, no flights available on your route to reserve your ticket.

USER: Thanks for your information.

ASSISTANT: Most welcome.