You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to travel from DFW to LGA. Can you help me to book a flight ticket?

ASSISTANT: Would you please provide me your itinerary travel dates?

USER: I want to fly in the flight on July 16 and July 18.

ASSISTANT: Would you like to travel by direct or connecting flight?

USER: I want to have a connecting flight.

ASSISTANT: Are there any more preferences that you want to avail?

USER: I want to depart in morning time.

ASSISTANT: May I know your name please?

USER: Katherine Robinson.

ASSISTANT: Katherine Robinson. I regret to inform that there are no flights on your route with the given dates.

USER: That's ok. Anyways, thank you.

ASSISTANT: Thank you very much for reaching us.