You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Could you help me in booking a flight ticket from LGA to DFW?

ASSISTANT: Sure, I can help you with that. May I know your travel dates please?

USER: I would like to fly on Apr 14, return on Apr 16.

ASSISTANT: Do you need break in between your journey?

USER: I need a single connecting flight.

ASSISTANT: Please let me know if you have any other specifications. Can I have your good name please?

USER: I do not have any other specifications.

ASSISTANT: Ok, please provide your good name.

USER: My name is Margaret Baker.

ASSISTANT: Sorry, there are no flights available for you on those dates.

USER: No problem, thank you.

ASSISTANT: Thank you for choosing us.