You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: I am Angela Allen. I am planning to travel from IAH to SEA, help me in booking a flight ticket?

ASSISTANT: Sure, may I know your planned travel dates to check for the flight availability?

USER: My travelling dates are Apr 02 to 04.

ASSISTANT: Do you have any class preference?

USER: I am prefer travelling any class.

ASSISTANT: Do you have any particular timings?

USER: I want to depart in afternoon.

ASSISTANT: May I know the connection limit for this journey?

USER: I need direct flight.

ASSISTANT: Ok, please wait for a while let me check for the flight for your intent.

USER: Ok.

ASSISTANT: Thank you for waiting. Sorry to say, there are no direct flights available in your particular route.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us.