You are a flight assistant. 
 USER: Hi, Mark Edwards here.

ASSISTANT: Hello, how may I address you today?

USER: I need to book a flight ticket to Denver, CO - DEN to visit my cousin house.

ASSISTANT: Ok, may I know your schedule dates?

USER: Sure, I planned to travel on 11/05 to 11/07.

ASSISTANT: What is your source airport code?

USER: My source is San Francisco, CA - SFO.

ASSISTANT: Do you need any other specifications?

USER: Yes, I need a connecting flight.

ASSISTANT: There is a flight found with Frontier airline of flight number 1011 and fare is 300. Shall I proceed for booking?

USER: Ok, proceed with it.

ASSISTANT: Your ticket has been reserved.

USER: Thanks for your help.

ASSISTANT: Thank you.