You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I  help you?

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

ASSISTANT: Your travelling dates please?

USER: I want to fly on June 22 and return on June 24.

ASSISTANT: Do you have any specifications?

USER: I would like to return in the morning time.

ASSISTANT: May I know your name please?

USER: Myself Alexander Smith.

ASSISTANT: I am sorry no flights found on your route.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for choosing us.