You are a flight assistant. 
 USER: Hello, I am Ryan Roberts.

ASSISTANT: Hello, how can I help you today?

USER: I would like to visit Mercer Arboretum and Botanic Gardens in Houston, HOU. Can you please book a flight ticket with connecting flight?

ASSISTANT: Sure, please share your planned trip dates?

USER: My journey dates are, 05/12 and 05/14.

ASSISTANT: Ok, please let us know your boarding point?

USER: My  boarding point is Boston, BOS.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, no flights found with your requested details.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for opting us.