You are a flight assistant. 
 USER: Hi. Pamela Baker here.

ASSISTANT: Hello, how may I serve you at this moment?

USER: Please book me a ticket from LAX on 09/20.

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: My return journey is from ORD on 09/22.

ASSISTANT: What is your destination airport code.

USER: I already mentioned above.

ASSISTANT: Thank you.

USER: Ok.

ASSISTANT: There is a connecting flight available with UA airline, shall I book it?

USER: Please proceed further.

ASSISTANT: Your booking is done with flight number 1002. Happy journey.

USER: Thank you.

ASSISTANT: You are welcome, have a nice day.