You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: My name is Daniel Jackson.

ASSISTANT: How can I assist you today?

USER: I need to book a flight ticket from LGA to LAX. Please help me in booking a flight ticket.

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

USER: My journey dates are from Aug, 14 to Aug, 16.

ASSISTANT: Do you have any specifications?

USER: I need to return in the afternoon and I need a single connecting flight.

ASSISTANT: Do you have any preferences about class?

USER: No, I am comfortable with any class.

ASSISTANT: Do you have any other preferences?

USER: No.

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

USER: No problem, thanks for your information.

ASSISTANT: Welcome, have a great day.