You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I support you today?

USER: Can you please help me with booking flight ticket from IAD to DEN?

ASSISTANT: Sure, please share me your trip dates.

USER: My trip dates are 15 and 17 of July.

ASSISTANT: For booking, we need your good name. Please mention it.

USER: My name is Deborah Miller.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I need a connecting flight.

ASSISTANT: May I know your class preferences?

USER: I don't have class preference.

ASSISTANT: We found a UA airline and 1018 is flight number with a fare of 100. Shall I proceed?

USER: Yes, please.

ASSISTANT: Your ticket is confirmed with an economy class.

USER: Thank you for the help.

ASSISTANT: Thank you for reaching us.