You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I have an important meeting at Seattle region, so I need a flight ticket booking from IAH to SEA to attend the meeting. Can you please help me with booking?

ASSISTANT: Yes, can you tell me your travelling dates?

USER: Thank you and I want to take off on Aug 9th and I will arrive back on Aug 11th.

ASSISTANT: Do you have any other specifications?

USER: It is an important meeting, so I need a direct flight.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: Sorry to inform you that there are no flights found on your requested dates.

USER: Very sad to heart that one from your side, I can prefer any other source to reach my location. Thank you for your help.

ASSISTANT: Can I know your name?

USER: Sure, my name is Susan White.

ASSISTANT: Thank you for reaching us.

USER: Welcome.