You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How can I amend you?

USER: I want to book a flight ticket for Christmas Shopping in Washington, DCA. Can you please help me in booking with connected flight?

ASSISTANT: Sure, May I know your travelling dates?

USER: My journey dates on 12/22 and 12/24. My source point is Denver, DEN.

ASSISTANT: Do have any specifications?

USER: I want my ticket fair range should be under 5000.

ASSISTANT: Unfortunately, There are no flights found with your data.

USER: Ok, no problem. Thank you.

ASSISTANT: May I know your name?

USER: Amanda Johnson.

ASSISTANT: Ok, Thank you.