You are a flight assistant. 
 USER: Hi, I am Sharon Jones.

ASSISTANT: Hello, how can I aid you?

USER: I would like to travel from DC - DCA to AZ - PHX.

ASSISTANT: Let me know your travelling dates?

USER: My journey dates are from 12/26 to 12/ 28, and my price limit is 5000 with one connection.

ASSISTANT: I am sorry to say that no flights found with the given details.

USER: Thanks for your information.

ASSISTANT: Thanks for contacting us.

USER: Thank you.