You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Charles Hernandez here.

ASSISTANT: How may I help you?

USER: I need to attend a marriage at San Francisco, can you please book a flight ticket from IAH to SFO?

ASSISTANT: May I know your travel dates?

USER: Sure, I would like to travel on 10/20 and return back on 10/22.

ASSISTANT: According to your information, I have found a flight with single stop over in your journey with a minimum fare of 100 with flight number 1006. Shall I proceed with this flight?

USER: Ok, please proceed with booking.

ASSISTANT: Your booking is done.

USER: Thank you for booking my ticket.

ASSISTANT: Most welcome.