You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

USER: Please book a flight ticket from HOU to IAD?

ASSISTANT: Sure, can you please share your journey dates?

USER: My journey dates are Mar 07 and Mar 09.

ASSISTANT: Is there any connection limit in your journey?

USER: I need a connecting flight.

ASSISTANT: May I know your name please?

USER: I am Jessica Young.

ASSISTANT: Are there any more specifications?

USER: I prefer a departure flight time at morning.

ASSISTANT: Sorry, there are no flights are available matching your details.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for approaching us.