You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Mark Jackson. I need to book a flight ticket with single connection, Can you help me for booking a plane reservation please?

ASSISTANT: Sure Mark, can you please help me with your journey dates?

USER: I would like to travel on 04/28 to 04/40.

ASSISTANT: May I know your airport codes please?

USER: My source point is TX-HOU to NV-LAS. My return date on 04/30.

ASSISTANT: Sure, please wait for a minute.

USER: Sure.

ASSISTANT: Mark, there is a flight with JetBlue airlines providing service with price 400. Shall I book the ticket for you?

USER: Ok, proceed for booking.

ASSISTANT: Your ticket is confirmed and the flight number is 1019.

USER: Thanks for your information.

ASSISTANT: Thank you for choosing our services.