You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Linda  Parker. I need a a flight ticket booking from DFW to HOU to attend a seminar, so can you please help me with flight ticket booking?

ASSISTANT: Sure, may I know your travel dates?

USER: Thank you and I have planned my journey dates on Dec month and the dates would be 17th and 19th of the month.

ASSISTANT: At what time do you like to travel?

USER: I would like to depart and return back in the evening time.

ASSISTANT: Do you have any specifications?

USER: I need a business class flight and it should have one connection limit.

ASSISTANT: Sorry, there is no flight on your details.

USER: No problem with that one, thank you for your help.

ASSISTANT: Thank you.

USER: Welcome.