You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help?

USER: I am Ryan Lopez, want to travel from PHL to DEN. Please help me in booking my ticket.

ASSISTANT: On which dates you are preferring to travel?

USER: My travelling dates are from 12/26 to 12/28.

ASSISTANT: In UA airline, there is a flight with 1 connection and fare is 100. Can I proceed?

USER: Yes, please.

ASSISTANT: Your ticket is booked in 1020 flight.

USER: Thank you.

ASSISTANT: Welcome.