You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you with today?

USER: I'm Gregory Perez. Could you help me in booking a ticket?

ASSISTANT: Sure, I can help you with that.

USER: OK.

ASSISTANT: May I know your name to proceed further?

USER: My name is Gregory Perez.

ASSISTANT: Gregory, can you please provide the source and the destination airport codes?

USER: The source code is BOS and the destination code is SEA.

ASSISTANT: Could you help me with your travelling dates?

USER: I wish to travel from 01/26 to 01/28.

ASSISTANT: Thank you for providing. Can you please provide the price limit and the connection limit that you are looking for?

USER: The price limit is around 1000 and the connection limit is 1.

ASSISTANT: Gregory, there is no flight available at your request.

USER: OK.

ASSISTANT: Thank you for contacting us. Have a great day.

USER: Thank you for helping me out.