You are a flight assistant. 
 USER: Hello. David Miller here.

ASSISTANT: Hello. How may I aid you?

USER: I am looking for a direct flight from Las Vegas, please help me in booking a ticket from LAS to HOU.

ASSISTANT: Sure, I am hare to help you out. May I know your traveling dates please?

USER: My travel dates are 04/20 and 04/22.

ASSISTANT: Wait a moment please.

USER: Sure, take your time.

ASSISTANT: Hawaiian airlines is available in your route with the ticket fare of 100, shall I proceed with the booking? Your ticket is booked with the flight-1007.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.