You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you today?

USER: I am Debra Lopez here, I want to reserve my ticket from DCA to AUS, can you please help me?

ASSISTANT: Sure, can you please share your planned trip dates?

USER: Sure, my planned dates of journey are from May, 27 to May, 29.

ASSISTANT: Do you have any depart and arrival timings?

USER: Yes, I need a depart time at evening.

ASSISTANT: May I know your connection limit?

USER: Yes, I need a connecting flight.

ASSISTANT: Which class do you prefer either economy or business?

USER: I am comfortable with any class.

ASSISTANT: We found a connecting flight of fare 100 with airline Delta and number is 1018. Can I proceed?

USER: Ok, you can book it.

ASSISTANT: Your ticket has been confirmed in economy class and depart time is in the evening.

USER: Thank you for your help in booking my ticket.

ASSISTANT: Thank you for availing us.