You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I render you today?

USER: Alexander Lopez here. I want to travel from EWR to SEA.

ASSISTANT: Ok, may I know your journey dates?

USER: My trip dates are Jan 12 and Jan 14.

ASSISTANT: May I know your connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you have any airline preference?

USER: I prefer normal-cost airlines.

ASSISTANT: Is there any other specifications?

USER: I want to depart in the morning.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there are no flights found from your source.

USER: No problem, thank you.

ASSISTANT: Thank you for opting us.