You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Jonathan Hill.

ASSISTANT: How may I assist you for the day?

USER: I am planning to attend convocation meeting at Boston, can you please help me with booking a flight ticket?

ASSISTANT: Jonathan Hill, can you please share your planned dates for the following trip please?

USER: Sure, I would like to take off on 07/10 and return back on 07/12.

ASSISTANT: May I know your origin and destination airport codes?

USER: My source airport code is SEA and the destination airport code is BOS.

ASSISTANT: Please wait for a minute till I check available flights for you.

USER: Ok, but please make sure that connection limit is 0.

ASSISTANT: I am very sorry to inform you, but there is no flight available on your route for your required dates with 0 connection.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for reaching our agency.

USER: You are welcome.

ASSISTANT: Have a great day Jonathan Hill.