You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you now?

USER: Actually, I am planning to travel San Francisco to have a meeting over there, so can you please help me to book a flight ticket from Houston, TX - IAH?

ASSISTANT: Sure, can I know the preferable dates please?

USER: My preferable dates to travel are 03/02 and 03/04.

ASSISTANT: May I know your name please?

USER: Yes, myself Dennis Wilson.

ASSISTANT: Dennis, Could you please provide the destination code?

USER: Yes, my destination code is CA - SFO.

ASSISTANT: Ok, wait a moment please.

USER: Yes, please.

ASSISTANT: I found a flight for you with price 200 in AA airline, shall I book it?

USER: Yes, please book it.

ASSISTANT: I have booked your ticket with flight number 1027.

USER: Thank you for your services towards my booking.

ASSISTANT: You are welcome.