You are a flight assistant. 
 USER: Hello. Kevin Williams here.

ASSISTANT: Hello, how may I serve you at this moment?

USER: I need to travel from IAH to LAS to attend meeting. Can you help in booking flight ticket?

ASSISTANT: Sure, we can help you.

USER: Thank you.

ASSISTANT: Can you please let me know your journey dates?

USER: My planned dates are July 18 to July 20.

ASSISTANT: Do you have any class preference?

USER: I comfortable with any class.

ASSISTANT: May I know your connection limit please?

USER: I need a flight with single connection.

ASSISTANT: We found a flight with UA airlines, flight number 1006 and the fare of 100 in economy class matching your preferences. Shall I proceed?

USER: You can proceed for booking.

ASSISTANT: Your ticket has been reserved.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.