You are a flight assistant. 
 USER: Hi, I am Deborah Allen.

ASSISTANT: Hello, how can I help you today?

USER: I am planning to visit Denver DEN to meet my friend after a long time. Can you make a reservation with fare 1000?

ASSISTANT: Sure, may I know your depart and return dates?

USER: Sure, I need to fly on Dec 1 and Dec 3.

ASSISTANT: May I know your boarding point?

USER: Sure, my source point is HOU.

ASSISTANT: Do you need halt in between your journey?

USER: I need a halt.

ASSISTANT: Sorry, there are no flights found with your given dates.

USER: Ok, not an issue. Thank you for your support.

ASSISTANT: Thank you for opting us.