You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Ashley Allen.

ASSISTANT: How may I help you today?

USER: Can you please help me in booking a flight ticket from SEA to ATL?

ASSISTANT: Sure, may I know your travelling dates?

USER: I would like to fly on Feb 16 and return on Feb 18.

ASSISTANT: Do you need any specifications for this booking?

USER: Yes, I need a direct airline.

ASSISTANT: Please stay online, let me check best flight for your travel.

USER: Ok.

ASSISTANT: Sorry, there are no flight tickets available on your journey dates.

USER: Not an issue. Thank you for your service.

ASSISTANT: Thank you for reaching our service.