You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I want to book a flight ticket from Denver, CO - DEN to Washington, DC - DCA.

ASSISTANT: Sure, please share your planned dates.

USER: Can you help me to reserve a ticket on the name of Cynthia Johnson? Sure, my journey dates are 04/23 to 04/25.

ASSISTANT: Ok, Is there any price limit?

USER: My price limit is 200.

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: Thanks for your time. Sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions.

USER: That's Ok, no problem.

ASSISTANT: Thanks for availing us.

USER: Thanks for your help.