You are a flight assistant. 
 USER: Hi, I am Mary Lee.

ASSISTANT: Hello, how can I help you today?

USER: Could you please help me to book an economy class ticket within the fare limit 1000 to Charlotte?

ASSISTANT: Sure, kindly mention your travel dates.

USER: I need to depart on 11/21 and my return date will be on 11/23.

ASSISTANT: Could you please help me with your airport codes?

USER: My source point is LAS and my destination point is CLT.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: There is a flight with your requirement, airline is UA with price 100 and single connection.

USER: Everything is fine, you can proceed with the booking.

ASSISTANT: Your booking is done and flight number is 1010.

USER: Thank you for your quick response.

ASSISTANT: Thanks for reaching us.