You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Matthew Lewis.

ASSISTANT: How may I guide you today?

USER: I have to attend my sister's wedding at Seattle, could you please help me with booking a flight ticket?

ASSISTANT: Sure, I will help you with that. Can you please share your travelling dates?

USER: I would like to take off on 06/01 and return on 06/03.

ASSISTANT: May I know your airport codes to proceed further?

USER: My nearest source airport code is PHL and destination airport code is SEA.

ASSISTANT: Give me a minute.

USER: Sure.

ASSISTANT: Sorry to say that there is no flight found.

USER: That's ok, I will find an another alternate way to complete my trip. Anyways, thank you for the information.

ASSISTANT: Thank you for reaching us.