You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you today?

USER: I would like to book a flight ticket from SEA to DFW to meet my friends.

ASSISTANT: Sure, when are you planning to travel?

USER: My travelling dates are Dec 27 and Dec 29.

ASSISTANT: Any preferences you have?

USER: I intend to return in the evening.

ASSISTANT: Ok, can you share your name please?

USER: I am Jennifer Lee.

ASSISTANT: Sorry, no flights found as per your request.

USER: No problem, thank you for your help.

ASSISTANT: Thank you for contacting us.