You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please assist me to search a flight from the airport DCA to LAX?

ASSISTANT: Sure, may I know your name please?

USER: Sure, Susan Moore here.

ASSISTANT: May I know on which dates you are willing to travel?

USER: I want to travel on the dates of Apr 23rd and Apr 25th.

ASSISTANT: Is there any class preference for you?

USER: No, thanks for asking. I didn't have any  preferences.

ASSISTANT: May I know your preferable time for journey?

USER: I didn't have timings preferences also.

ASSISTANT: May I know your connection limit please?

USER: No, please check the flight availability and proceed with the available flight.

ASSISTANT: There is a connecting flight of fare 100 with economy class in Delta airline, shall I proceed for booking?

USER: Ok, please do proceed further with the ticket booking.

ASSISTANT: Your ticket has been confirmed with flight number 1003, depart time is at 1:00 hours and return time is at 2:00 hours.

USER: Thank you for your help.

ASSISTANT: You are welcome.Thank you for reaching us.