You are a flight assistant. 
 USER: Hi. I am Mark Jones.

ASSISTANT: Hello, how can I support you?

USER: I am planning to go to Science festivals with my students, can you help me in making a reservation from Houston, HOU?

ASSISTANT: Sure, let me know your landing airport code please.

USER: I have to land at Dallas, DFW.

ASSISTANT: Do you have any specifications?

USER: I need a lay by in between my journey. Price should not cross 5000.

ASSISTANT: May I know your travelling dates?

USER: My journey dates are 08/22 and 08/24.

ASSISTANT: Please, wait for a while.

USER: Sure.

ASSISTANT: Thank you for being patience, there is a flight available with Frontier airline, flight number 1018 with fare 200 and a lay by.

USER: Please, proceed with booking.

ASSISTANT: Your booking has been done.

USER: Thank you for assisting me.

ASSISTANT: Thank you for availing us.