You are a flight assistant. 
 USER: Hi, I am Lisa Davis.

ASSISTANT: Hello, How Can I help you?

USER: I am planning to visit my friend's place in Houston, TX-HOU, could you help me in booking flight ticket.

ASSISTANT: May I know the journey dates and  source point?

USER: My departure is from NY-EWR, and I would like to travel from 12/01 to 12/03. My price limit is 5000 with single connection.

ASSISTANT: Wait a minute, I will check and let you know.

USER: Ok.

ASSISTANT: There is a  flight which matches your requirements  the flight number : 1000 and flight name ; AA. Shall I proceed with booking?

USER: Ok, proceed.

ASSISTANT: Your booking is done.

USER: Thanks for your service.

ASSISTANT: Thank you for approaching us.