You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Jerry Campbell.

ASSISTANT: How can I serve you?

USER: I need your service in booking a flight ticket to Los Angeles, CA - LAX. Can you serve me?

ASSISTANT: Sure, May I know your travelling dates?

USER: 06/21 and 06/23 are my preferred travel dates.

ASSISTANT: Can I know your source airport code?

USER: Phoenix, AZ - PHX is my source airport.

ASSISTANT: Do need you need any connection?

USER: Yes, I need a connection.

ASSISTANT: We found a Southwest airline, flight number:1010 and the price is 100. Can I reserve it?

USER: Ok, you may proceed to this airline.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thanks for the great help.

ASSISTANT: Thank you for picking us.