You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Lisa Thomas.

ASSISTANT: How may I aid you?

USER: Can you please help me with booking a flight ticket from EWR to SEA?

ASSISTANT: Sure, I am ready to help you. Can you please provide me your trip dates?

USER: Trip dates are 05/21 and 05/23.

ASSISTANT: May I know your connection limit?

USER: I need a direct flight.

ASSISTANT: Do you have any class preferences?

USER: I am comfortable with any class.

ASSISTANT: May I know your depart and return timings?

USER: I want to return at evening.

ASSISTANT: Sorry, there are no flights found on your trip dates.

USER: Oh! Sad to hear that. Anyway, I will find another alternative to go there. Thank you.

ASSISTANT: Thank you for choosing us.