You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I am Debra Campbell. I would like to book a flight ticket to San Francisco to visit National Mall for shopping with my friends. Can you help me with booking flight ticket from Denver?

ASSISTANT: Sure, we are here to help you. Can you share me your journey airport codes?

USER: DEN is my origin and SFO is my destination.

ASSISTANT: Let me know when you are willing to travel?

USER: 12/11 and 12/13 are my travelling dates.

ASSISTANT: Do you need any halts in between your journey?

USER: Yes, I need a halt.

ASSISTANT: Ok, wait for some time I will check the availability of flights and get back to you.

USER: Sure.

ASSISTANT: We found Southwest airline with connecting flight and number 1001 fare of 200. Shall I proceed for booking?

USER: Yes, please.

ASSISTANT: Your ticket has been confirmed.

USER: Thanks for booking my ticket.

ASSISTANT: Thanks for approaching us.