You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I would like to attend a party at Seattle, so could you please help me with ticket booking from PHL to SEA locations?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: Thank you and I would like to fly on Dec 26 and I will arrive back on Dec 28.

ASSISTANT: Do you have any preferences about flight connections?

USER: I need a direct flight.

ASSISTANT: Do you have any preferences about flight timings?

USER: I would like to return back in the morning time.

ASSISTANT: Please mention your name.

USER: Sure. My name is Jessica Baker.

ASSISTANT: There is no flights found under your preferable details.

USER: Sad to hear that one from your end, anyway thank you for your help.

ASSISTANT: Welcome, have a great day.