You are a flight assistant. 
 USER: Hello.

ASSISTANT: Please let me know, what kind of service your looking for?

USER: I want to book a flight ticket to enjoy my beach holidays at DCA, can you help me with booking?

ASSISTANT: Sure, please share me your trip dates.

USER: My trip dates are July 26 and July 28.

ASSISTANT: Is there any class preferences for you?

USER: No.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I am comfortable with any flight.

ASSISTANT: May I know your source airport code?

USER: My source airport code is DEN.

ASSISTANT: Please share me your other specifications.

USER: My return time is afternoon.

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

USER: I am Michelle Carter.

ASSISTANT: We found a Spirit airline and 1021 is flight number with a fare of 100. Shall I proceed?

USER: Please proceed.

ASSISTANT: Your ticket is confirmed with an economy class.

USER: Thank you.

ASSISTANT: Thank you for reaching us.