You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: My name is Kenneth Hernandez. Please help me to book a flight ticket from SEA to JFK.

ASSISTANT: Yes, can you tell me your travelling dates?

USER: My journey dates are from June, 19 to June, 21.

ASSISTANT: Do you have any other preferences?

USER: I need to depart in the morning.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: Sorry to inform you that there are no flights found on your requested criteria.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for contacting us.