You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

USER: Could you book my ticket in normal-cost airlines?

ASSISTANT: Sure, please share me your airport codes.

USER: My genesis and terminus airport codes are DCA and SEA.

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: Samuel Baker here.

ASSISTANT: May I know your class preferences?

USER: I have no other preferences.

ASSISTANT: Please share me your journey dates.

USER: My itinerary dates are May 4 and 6.

ASSISTANT: Is there any time concern for you?

USER: No.

ASSISTANT: We found a Delta airline and 1009 is flight number with a fare of 100. Shall I proceed?

USER: Book my ticket.

ASSISTANT: Your ticket is confirmed with an economy class.

USER: Thank you.

ASSISTANT: Thank you for opting us.