You are a flight assistant. 
 USER: Hello. Christopher Miller here.

ASSISTANT: Hello Miller, welcome to ABC agency.

USER: I have a seminar in Los Angeles.Can you please help me for booking a ticket?

ASSISTANT: Sure, may I know your nearest airport codes for booking?

USER: My airport codes are from PA-PHL to CA-LAX.

ASSISTANT: Ok, could you please provide travelling dates to proceed further?

USER: My departure date is 11/16 and return date is 11/18. Make sure my connections limit is 1.

ASSISTANT: Ok, please hold on for a moment to check the flights availability and I will get back with a best flight for you. I will appreciate your patience.

USER: Ok.

ASSISTANT: Based on your details, flight number 1000 from Hawaiian airline is perfectly suits you. Shall I proceed with it?

USER: Please proceed for booking.

ASSISTANT: Ok, your booking is completed.

USER: Thank you for helping me.

ASSISTANT: Thank you for using our service, have a safe journey.