You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I oblige you today?

USER: I am Eric Brown, aid me to reserve a ticket from San Francisco, SFO to Dallas, DFW.

ASSISTANT: Sure, we will help you. Can you please let me know your journey dates?

USER: My journey dates are on 12/14 and 12/16.

ASSISTANT: Do you prefer connecting or direct flight in your journey?

USER: I need a connecting flight.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry to inform you that, we did not find any flights according to your guidelines.

USER: Ok, thanks for providing information.

ASSISTANT: Thank you for approaching us.