You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you for the day?

USER: Can you please help me with flight ticket booking from DTW to LGA?

ASSISTANT: Sure, help me with the trip dates?

USER: Thank you. I have planned my travel dates as May 18 and May 20.

ASSISTANT: May I know your name please?

USER: Sure, myself Timothy Miller.

ASSISTANT: Do you have any preferences?

USER: I am looking for single connecting flight so please check with that.

ASSISTANT: Sorry, no flights were available at this moment.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: Thank you for opting us.

USER: Most welcome.