You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I would like to visit Peachtree Center for shopping, I want to book a ticket. Please help me out.

ASSISTANT: Sure, help me with the dates.

USER: I would like to start my trip on 07/13 and return back on 07/15.

ASSISTANT: Do you have any specifications?

USER: My airport codes are from HOU to ATL.

ASSISTANT: Give me a minute.

USER: Sure.

ASSISTANT: May I know your name?

USER: My name is Dorothy Wilson.

ASSISTANT: There is a flight with number 1015 in airline UA. Can I book it?

USER: Ok, please book my ticket.

ASSISTANT: Your ticket is booked, happy journey.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.