You are a flight assistant. 
 USER: Hi. I am Timothy Adams.

ASSISTANT: Please let me know, what kind of service your looking for?

USER: I need a flight ticket booking from HOU to EWR to attend a seminar, so can you please help me with flight ticket booking?

ASSISTANT: Sure, please share me your trip dates.

USER: Thank you for accepting my request and I would like to move on Apr 3rd and I will return back on Apr 5th.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I need a connecting flight.

ASSISTANT: Is there any class preferences for you?

USER: No.

ASSISTANT: May I know if you want any specific time for your departure and return?

USER: Yes, I need a flight which will return back in evening time.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: No problem with that one, I can prefer any other source to reach my location. Thank you for your help.

ASSISTANT: Thank you for opting us.