You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Kevin Clark here.

ASSISTANT: How can I help you today?

USER: I would like to visit Dallas for a business trip, so can you please help me out with booking of a flight from LGA?

ASSISTANT: Sure, I can help you in booking flight ticket.

USER: Thank you.

ASSISTANT: Can you please let me know your travel dates for booking flight ticket?

USER: Sure, I am planning to go on 10/31 and please book a return ticket on 11/02.

ASSISTANT: May I know your preferable destination airport code name?

USER: Sure, destination code is DFW.

ASSISTANT: Ok, please wait a moment, I will check flight availability.

USER: Sure, take your time.

ASSISTANT: Sorry, as per your requested dates there is no flights available in this route.

USER: Oh! So sad to hear. Anyway, thank you for the information.

ASSISTANT: Thank you for reaching us, have a nice day.

USER: Welcome.