You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Myself Brenda Lewis. I need to meet my friend in Houston, can you please reserve flight ticket from SEA and IAH?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: Here are my travelling dates Oct,17 and Oct,19.

ASSISTANT: Please wait for a moment.

USER: Please take your time.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: That's ok, I will choose any other source to travel my destination.

ASSISTANT: Thank you for reaching us.

USER: Thank you for searching available flights.