You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Karen Edwards.

ASSISTANT: Karen Edwards, how may I assist you today?

USER: I am planning my holiday trip to visit Washington to promote my business. Can you please help me in reserving the ticket from HOU to DCA?

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

USER: I am planning my trip on Oct 7, and again I will return back on Oct 9.

ASSISTANT: Please help me with your depart and return time.

USER: My return time is morning.

ASSISTANT: Do you need a direct or connecting flight?

USER: I am flexible with single connection.

ASSISTANT: Please let me know if you have any other preferences in your journey.

USER: My airline preference is normal-cost.

ASSISTANT: Please help me with your class preference.

USER: I am comfort with any class.

ASSISTANT: Please allow me a minute.

USER: Sure, I will wait for your response.

ASSISTANT: We have a connecting flight operated by United Airlines with a fare of 300. Is it ok for you?

USER: Yes, please go ahead and reserve the ticket.

ASSISTANT: I have booked your ticket in flight-1015. It departs at 12 PM and returns at 5 AM.

USER: Thank you very much for reserving the ticket.

ASSISTANT: Thank you for reaching us. Have a great trip.

USER: You are welcome.