You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am planning to attend a Hockey competition in Philadelphia PHL from SFO. Can you find a flight ticket for me?

ASSISTANT: Sure, we are here to help you. Can you share me your travelling dates?

USER: Ok, I want to airborne on Dec 18 and recur on Dec 20.

ASSISTANT: May I know your name further process?

USER: Yes, I am Sandra Lewis.

ASSISTANT: Do you have any other specifications?

USER: I need a direct flight to travel.

ASSISTANT: Ok, wait for some time I will check and get back to you.

USER: Sure, take your own time.

ASSISTANT: Thanks for waiting there are no flights found on your details.

USER: Ok, not an problem. Thank you for your information.

ASSISTANT: Thanks for approaching us.