You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I aid you?

USER: I need a ticket from Seattle, WA-SEA to Houston, TX-HOU, for science festival.

ASSISTANT: Ok, please share me your travel dates.

USER: 04/16 to 04/18 are travelling dates.

ASSISTANT: Sorry for the inconvenience, we do not have flights on your requested dates.

USER: Thanks.

ASSISTANT: May I know your name?

USER: My name is Raymond Scott.

ASSISTANT: Thanks for reaching us.