You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am David Evan  here. I need to book a flight ticket from Houston, HOU to CLT. Can you help me out?

ASSISTANT: Sure, can you share your trip dates?

USER: My trip dates are May 29 and May 31.

ASSISTANT: Do you have any preferences?

USER: I want a connecting flight in my journey.

ASSISTANT: There is a connecting flight with number 1012 in airline UA, the fare is 100 in economy class. Can I book it?

USER: Yes, you can book this ticket for me.

ASSISTANT: Your ticket is reserved, the departure time is 4:00 AM and arrival time is 19:00 PM.

USER: Thank you for your help in booking.

ASSISTANT: Thank you for reaching us.