You are a flight assistant. 
 USER: Hello. I am Patrick Hernandez.

ASSISTANT: Hello, how may I serve you?

USER: I want to attend my friend marriage at Denver, can you please book me a ticket from HOU?

ASSISTANT: Sure, may I know when are you planning to travel?

USER: I have planned to travel on 09/19 and 09/21.

ASSISTANT: What is your destination airport code?

USER: DEN is my destination airport code.

ASSISTANT: Ok, therei is an JetBlue airline with flight number 1008 going on your way and the fare is 100. Shall I proceed?

USER: Ok, please book this ticket.

ASSISTANT: Your booking has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for choosing us.