You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how best I can serve you at this moment?

USER: Please help me to book a flight ticket from SEA to EWR.

ASSISTANT: Sure, can you please forward your journey dates?

USER: My journey dates are from Feb, 14 to Feb, 16.

ASSISTANT: May I know your name please?

USER: Emily Clark.

ASSISTANT: Is there any connection limit in your journey?

USER: I need   a direct flight to fly.

ASSISTANT: Are there any more preferences?

USER: I prefer to return in the evening.

ASSISTANT: Sorry, there are no flights are available matching your specifications.

USER: Thank you for your information.

ASSISTANT: Thank you for approaching us.