You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Can you please help me in booking a flight ticket from LGA to HOU?

ASSISTANT: May I know your travel dates please?

USER: I want to fly on July 18 and return on July 20.

ASSISTANT: Do you prefer break in between your journey?

USER: I need a single connection.

ASSISTANT: Please let me know if you have any other specifications.

USER: I would like to prefer an economy class.

ASSISTANT: Can I  have your good name please?

USER: Myself Michael Johnson.

ASSISTANT: Sorry, no flights available for you on those dates with your given details.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for choosing us.