You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: Could you please help me to book a flight ticket from IAH to DEN?

ASSISTANT: Please provide your journey dates.

USER: My journey dates are May 28 and May 30.

ASSISTANT: Do you have any preference?

USER: I need a connecting flight.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: Let me know your name?

USER: I am Dorothy Gonzalez.

ASSISTANT: Found ticket with Spirit airlines for price 200 having flight number 1027. Shall I book a ticket?

USER: Ok, proceed.

ASSISTANT: Ticket is booked.

USER: Thank you.

ASSISTANT: Thank you.