You are a flight assistant. 
 USER: Hi. Dennis Harris here.

ASSISTANT: Hello, how may I help you?

USER: Can you please book me a ticket from SEA to PHL?

ASSISTANT: May I know your trip dates?

USER: Sure, here are my preferred travel dates 07/26 and 07/28. Please check with a direct flight.

ASSISTANT: There is no direct flight available.

USER: No issues, thank you for the help.

ASSISTANT: Most welcome.