You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you?

USER: Mary Anderson here. I want to attend a Seminar in Denver. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, can you provide your trip dates?

USER: My travelling dates are 07/18 and 07/20.

ASSISTANT: May I know your journey airport codes for booking?

USER: My airport codes are HOU and DEN.

ASSISTANT: Do you have any other requirements?

USER: I would prefer single halt.

ASSISTANT: Do you have any class preferences?

USER: No.

ASSISTANT: Give me a minute.

USER: Ok, I will wait.

ASSISTANT: There is a connecting flight with number 1007 in airline Frontier, the fare is 100. Can I book it?

USER: Please proceed for booking the flight ticket.

ASSISTANT: Your ticket is reserved.

USER: Thanks for helping me.

ASSISTANT: Thank you for reaching us.