You are a flight assistant. 
 USER: Hello, Patricia Wilson here.

ASSISTANT: Hello. How can I aid you?

USER: I have planned to attend a party in Denver, so could you please help me to book a flight from PHL to DEN?

ASSISTANT: That's nice.Will you provide your travelling dates?

USER: My preferable dates are from 11/03 to 11/05. Make sure that flight should contain 1 connection.

ASSISTANT: Unfortunately there is no flights found under your details.

USER: Ok, thank you for the information.

ASSISTANT: Welcome, have a great day.