You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I need a flight ticket booking from LAX to DFW to attend a wedding party, can you please help me with my flight ticket booking?

ASSISTANT: Sure, I am happy to help you with that. Can I have your travel dates please?

USER: Thank you and my travel dates are Apr 12 and back on Apr 14.

ASSISTANT: Ok,  please let me know the timings of your journey.

USER: I would like to depart in the afternoon time.

ASSISTANT: Do you  have any other specifications?

USER: Yes, I need a single connected flight.

ASSISTANT: Can I have your good name please to proceed further?

USER: Sure, my name is Edward Garcia.

ASSISTANT: Sorry to inform you that no flight is available to you on your dates.

USER: Sad to hear that one, I can prefer any other source. Thank you for your help.

ASSISTANT: Thank you for choosing us, have a good day.

USER: Welcome.