You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you today?

USER: I want to book a ticket with the name Brain Lewis to SEA from PHL, Please help me with it.

ASSISTANT: Sure, may I know your planned travel dates?

USER: My preferable travelling dates are from 04/16 to 04/18.

ASSISTANT: Do you have any connection limit?

USER: Yes, there should be a connection.

ASSISTANT: Please wait for a moment. I will check the availability of the flights.

USER: Ok.

ASSISTANT: We are glad to say that, we found an airline: Southwest, flight number: 1005 with a single connection and price is 100.

USER: Ok, you can proceed further.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for opting us.