You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Elizabeth Moore from Houston.

ASSISTANT: What services are you looking for?

USER: I am planning to attend a film festival at DCA. Can you please help me to book a flight from IAH?

ASSISTANT: Elizabeth Moore, when you willing to travel for this journey?

USER: Thank you, my journey dates are from Apr 23 to Apr 25.

ASSISTANT: Do you need a direct flight?

USER: No, I need one connection.

ASSISTANT: Sorry for the incontinence but there are no flights available for this journey.

USER: Ok, not an issue. Thank you for the information.

ASSISTANT: Thank you for approaching our services. Have a nice day.