You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Can you book flight ticket in economy class from Washington?

ASSISTANT: Sure, I will help you. Please help me with your planned travelling dates.

USER: I will travel on Feb 9th and return on Feb 11th.

ASSISTANT: Please help me with your name.

USER: My name is Catherine Walker.

ASSISTANT: Please help me with your source and arrival airport code.

USER: My source point is DCA and my destination is AUS.

ASSISTANT: Do you need a break in your journey?

USER: Yes, I want a break.

ASSISTANT: Do you have any other preferences in your journey?

USER: No.

ASSISTANT: Please allow me a minute.

USER: Sure.

ASSISTANT: We have a connecting flight operated by Southwest Airlines with a fare of 200. Is it ok for you?

USER: Yes, It is fine for me.

ASSISTANT: I have booked your ticket in flight-1009. It departs at 14:00 hours and arrives at 22:00 hours.

USER: Thank you for helping me.

ASSISTANT: You are welcome. Thank you for reaching us. Have a great time.