You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Andrew Edwards here.

ASSISTANT: How may I help you, Andrew?

USER: I want to travel from NV-LAS to TX-HOU, can you please help me to book a ticket?

ASSISTANT: Sure, may I know your journey dates please?

USER: Sure, my dates of trip is from 04/02 to 04/04.

ASSISTANT: Please wait a minute.

USER: Please make sure that price should not exceed of cost 500.

ASSISTANT: There is a flight with JetBlue airlines available with price 100. Shall I book the ticket?

USER: Please confirm my ticket.

ASSISTANT: Your ticket is confirmed and the flight number is 1002.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.

USER: Welcome.