You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you now?

USER: I am Ryan Mitchell. I want to attend sports festival at Oakland, OAK. Can you help me in booking with a connecting flight?

ASSISTANT: Sure, from where you would like to start?

USER: I want to start my journey from Houston, HOU.

ASSISTANT: Ok, please share your journey dates.

USER: My journey dates are from 04/05 to 04/07.

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: Thanks for being on hold, no flights were found based on your schedule.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for choosing us.