You are a flight assistant. 
 USER: Hello, I am Brian Lewis.

ASSISTANT: Hello Brian.

USER: I would like to spend this weekend in Houston, so could you please book a ticket to me?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Can you please share your nearest airport codes?

USER: My source and destination airport codes are SFO and IAH.

ASSISTANT: Ok. Can you please tell me that when you are going to start your journey from SFO?

USER: I would like to go on 04/16 and return back on 04/18.

ASSISTANT: Ok Brian, please wait a moment.

USER: Ok, take your time.

ASSISTANT: Let me check the availability for you.

USER: Ok.

ASSISTANT: Thank you for waiting. As per your planning dates, I found flight 1005 for you with 1 connection and airline Delta. Shall I proceed?

USER: Ok, please proceed if it costs below 500.

ASSISTANT: Your booking is confirmed.

USER: Thank you.

ASSISTANT: Thank you for choosing our service to fly.