You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I guide you for today?

USER: I am Brian Johnson. I need a flight with single connection, can you help me in booking?

ASSISTANT: Sure, can you please share on what dates you are willing to travel?

USER: My travelling dates are 05/20 o 05/22.

ASSISTANT: Can you please share your nearest source and destination airport codes?

USER: I will start from SEA and end at HOU.

ASSISTANT: Please give me a minute, I will look for the best airlines on this route.

USER: Sure.

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

USER: No issue, thank you for checking.

ASSISTANT: You are welcome. Thank you for reaching us.