You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: My name is Rebecca Carter, I want to book a flight to Houston, TX-HOU to visit Houston Zoo with my family. Can you book a connecting flight for me?

ASSISTANT: Please provide your travel dates.

USER: I will fly on 01/13 and return on 01/15.

ASSISTANT: May I know your origin airport code?

USER: My source airport is CA-SFO.

ASSISTANT: Connecting flight can be booked with airline Southwest for price 100.

USER: Please proceed with booking.

ASSISTANT: Ticket is booked having flight number 1004.

USER: Thank you for helping me with booking.

ASSISTANT: Thanks.