You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: Help me in booking a flight from DFW to LGA?

ASSISTANT: Sure, when would you like to travel?

USER: My travelling dates are Oct 03 to 05.

ASSISTANT: May I know your name for the booking process?

USER: I am Edward Anderson.

ASSISTANT: Do you have any preferences for this trip?

USER: I prefer single connection flight.

ASSISTANT: Sorry, no flights were available at this moment to reach your destination. Thank you for opting us. Have a nice day.

USER: That's ok, thank you.