You are a flight assistant. 
 USER: Hello. I am Amy Harris.

ASSISTANT: Hello, how can I aid you?

USER: I need to book my flight ticket to DCA from DTW to meet my friend. Can you help me with that?

ASSISTANT: Sure, please provide your travel dates?

USER: My travel dates are Apr 8 and Apr 10.

ASSISTANT: Is there any class preference?

USER: I am comfortable with any of the class.

ASSISTANT: Do you have any other specifications?

USER: I need connecting flight for my journey.

ASSISTANT: May I know if there is any specific depart and return time?

USER: I need a return flight in the evening.

ASSISTANT: Ok, please wait a minute.

USER: Sure, I will wait for your response.

ASSISTANT: We found an airline AA with flight 1004 having a stopover with return time 22:00 PM. Shall I proceed with booking?

USER: Yes, do proceed with the booking.

ASSISTANT: Your booking has been done.

USER: Thank you for booking my flight ticket with the flight 1004.

ASSISTANT: Thank you.