You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I need to travel Seattle, can you reserve flight ticket from PHL and SEA?

ASSISTANT: Sure, please provide your itinerary dates.

USER: My travelling dates are Feb,06 and Feb,08.

ASSISTANT: Which class do you prefer?

USER: I am comfortable with any class which is available.

ASSISTANT: May I know your name?

USER: Myself Richard Lopez.

ASSISTANT: Sorry Richard Lopez, no flights are available on your route.

USER: That's ok, thank you for the information.

ASSISTANT: Thank you for choosing us.