You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Jason Thomas here.

ASSISTANT: How can I assist you today?

USER: Please help me out in booking the ticket from LAX to IAD.

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

USER: My trip dates will be Feb 25 to Feb 27.

ASSISTANT: Do you have any specifications?

USER: My depart time must be in the afternoon.

ASSISTANT: Do you have any preferences about class?

USER: No.

ASSISTANT: Do you have any other preferences?

USER: I want 1 connection limit.

ASSISTANT: Please give me a moment.

USER: Ok.

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

USER: That's ok. Thank you.

ASSISTANT: Welcome, have a great day.