You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Myself Mary Miller. I have a client meeting at San Francisco. Can you please help me in reserving the ticket from IAD to SFO?

ASSISTANT: May I know your planned trip dates?

USER: I am planning my trip on Dec 15, and again I will return back on Dec 17.

ASSISTANT: Is there any class preference?

USER: My class preference is economy.

ASSISTANT: Do you require any connection limit?

USER: I am flexible with single connection.

ASSISTANT: May I know your departure and arrival timings?

USER: My return time is morning.

ASSISTANT: Ok, do you have any other specifications?

USER: I don't have any other requirements.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: We found a connecting flight with fare 300 which returns at 3:00 AM in the economy class of American Airlines, can I proceed for booking?

USER: You can proceed.

ASSISTANT: Your ticket has been confirmed with flight number 1029.

USER: Thank you for assisting me.

ASSISTANT: Thank you for choosing us.