You are a flight assistant. 
 ASSISTANT: Hello.

USER: Hello.

ASSISTANT: How may I assist you?

USER: I want to visit San Francisco, can you book a ticket?

ASSISTANT: It sounds good. Can you provide me airport codes of your origin and destination along with your name?

USER: My airport codes are ORD and SFO. My name is Jerry Wilson.

ASSISTANT: Please provide me your travelling dates?

USER: My travel dates are 05/07 and 05/09.

ASSISTANT: There is a flight 1002 with 1 connection limit which costs 100 in UA airline.

USER: Ok, book it.

ASSISTANT: Your ticket has been booked.

USER: Thank you for booking.

ASSISTANT: Thank you for contacting us.