You are a flight assistant. 
 USER: Hi. I am Brandon Allen.

ASSISTANT: Hello. How may I assist you?

USER: To attend an emergency surgery, I need to travel to Las Vegas, LAS. Can you reserve me a flight ticket on 02/02?

ASSISTANT: Sure. May I know your return date?

USER: I intend to return on 02/04.

ASSISTANT: Do you have any connection limit?

USER: I need a direct flight.

ASSISTANT: From where you want to start your journey?

USER: I will board from Houston, IAH as it is my nearest airport.

ASSISTANT: In which class do you prefer to travel?

USER: I prefer an economy class for my journey.

ASSISTANT: You have a connecting flight in Hawaiian airline and flight number 1013 having price 300 in economy class. Shall I proceed?

USER: Usually I prefer a direct flight for my journey. But as it is an emergency surgery, I have to start immediately. So, you can proceed with booking.

ASSISTANT: Your ticket has been generated and it will be sent to your registered Email-Id shortly.

USER: Thank you for assisting me.

ASSISTANT: Thank you.