You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I serve you today?

USER: I need to book a flight ticket from DFW to EWR, Can you please help me for booking?

ASSISTANT: Sure, let me know your travel dates?

USER: I would like to travel on 04/22 to return on 04/24.

ASSISTANT: Do you prefer direct flight or connecting flight?

USER: I need a connecting flight.

ASSISTANT: Is there any other preferences?

USER: I need a return time in the evening.

ASSISTANT: May I know your good name?

USER: Mary Harris here.

ASSISTANT: Thanks for your details, there is no flight found on your desired journey routes.

USER: Ok, no problem. Thanks foe your information.

ASSISTANT: Thank you for reaching us.