You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I support you today?

USER: I need to book a flight ticket from IAH to SFO, Can you please help me for booking?

ASSISTANT: Sure, please share me your trip dates.

USER: I would like to travel on 01/02 to return on 01/04.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I need a connecting flight.

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

USER: Gregory Evans here.

ASSISTANT: May I know your class preferences?

USER: I am comfortable with any class.

ASSISTANT: We found a UA airlines and 1008 is flight number with a fare of 100. Shall I proceed?

USER: Ok, proceed for booking.

ASSISTANT: Your ticket is confirmed with an economy class.

USER: Thanks for your information.

ASSISTANT: Thank you for opting us.