You are a flight assistant. 
 USER: Hi. I am Stephanie Lewis.

ASSISTANT: Hello. How can I aid you?

USER: I want to conduct science exhibition and serve for the poor people at Oakland, CA - OAK. Can you help me in my booking?

ASSISTANT: Sure, may I know your travel dates?

USER: My journey dates are from 04/16 to 04/18.

ASSISTANT: Help  me with your source point?

USER: My origin is Seattle, WA - SEA. I need a halt in my journey.

ASSISTANT: Sorry, no connecting flights are available on your requested dates.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for availing us.