You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I want to book a ticket from DEN to IAH to attend Client meeting.

ASSISTANT: Can I know your travel dates?

USER: My travelling dates are Aug 14 and Aug 16.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Is there any connection limit?

USER: Yes, I want single connection.

ASSISTANT: Let me know your departure and return timing.

USER: I am comfortable with any time.

ASSISTANT: Can I know your name?

USER: Sure, I am Gary Hall.

ASSISTANT: Found ticket with Spirit airlines for price 200.

USER: Ok, please proceed for booking.

ASSISTANT: Ticket is booked having flight number 1003.

USER: Thank you.

ASSISTANT: Thank you.