You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: Can you help me to book a flight ticket from SEA to SFO?

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

USER: My travelling dates are Feb 11 and Feb 13.

ASSISTANT: May I know your name?

USER: I am Alexander Allen.

ASSISTANT: Do you have any other specifications?

USER: I need a connecting flight.

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

USER: Sure.

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

USER: Oh! that very sad to hear, thank you.

ASSISTANT: Thanks for approaching us.