You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Please book my ticket from EWR to SEA.

ASSISTANT: Sure, may I know your planned travel dates to check for the flight availability?

USER: My trip dates are July 10 and July 12.

ASSISTANT: Do you have any specifications?

USER: I prefer normal-cost airlines.

ASSISTANT: May I know the connection limit?

USER: I need a connecting flight.

ASSISTANT: Please provide me the name to reserve the flight ticket.

USER: Brandon White here.

ASSISTANT: Sorry, there are no flights available for your desired dates.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.