You are a flight assistant. 
 USER: Hello, I am Laura Moore.

ASSISTANT: Hello. How may I assist you?

USER: Can you please check the availability of flights in between the points Philadelphia, PHL and San Francisco, SFO?

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: My travelling dates are Dec 17 and Dec 19.

ASSISTANT: May I know your connection limit please?

USER: I want single connection.

ASSISTANT: Please share if you want to travel in any specific time?

USER: My return time is evening.

ASSISTANT: Can you please share your airline preferences?

USER: I don't have any airline preference.

ASSISTANT: Wait a moment please in the mean while you can share your other specifications.

USER: I don't have any other preferences.

ASSISTANT: Laura Moore, there are no flights available in your route.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for choosing us.