You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Elizabeth Lee here.

ASSISTANT: How can I guide you Lee?

USER: I am a model, I have my photo shoot at San Francisco. So please book my ticket from Chicago.

ASSISTANT: Please provide me your trip dates.

USER: My itinerary dates are 07/01 and 07/03.

ASSISTANT: Can I know your airport codes?

USER: My airport codes are ORD and SFO.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Here is a flight-1000 with 1 connection limit, costs 200 from AA airlines. Shall I proceed?

USER: Please book my ticket.

ASSISTANT: Your ticket is confirmed.

USER: Thank you.

ASSISTANT: Most welcome.