You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What type of help can I do for you today?

USER: Please look for a flight for me to reserve a seat from SEA to LGA,  to meet my family. Will you help me?

ASSISTANT: Sure, I am here to help to reserve a flight for you.

USER: Thank you.

ASSISTANT: On which dates you want to travel?

USER: I will be travelling on 10/19 and return back on 10/21. I am looking for a direct flight.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: May I know your name to proceed further?

USER: Sure, I am Joshua Thomas.

ASSISTANT: Sorry, we cannot find any flight on this route.

USER: It's ok, thanks for your information.

ASSISTANT: It's my pleasure.