You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: I am Janet Parker. I am planning to travel from HOU to DFW, help me in booking a flight?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are Jan 25 to 27.

ASSISTANT: Can I know your class preference?

USER: I am ok in any class.

ASSISTANT: Do you need any connection limit?

USER: I need 1 connection flight.

ASSISTANT: May I know your return and depart time?

USER: I will return in evening flight.

ASSISTANT: Sorry, there are no flights available .

USER: That's ok, thank you.

ASSISTANT: Thank you for choosing us.