You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I help you?

USER: I want to visit, The Environment Media Association's award show, honouring people and media for work to raise public awareness of environmental issues. Can you help me out in booking my flight ticket?

ASSISTANT: Sure, could please provide your journey details?

USER: I need a ticket from OAK - ORD.

ASSISTANT: Ok, please mention your travel dates.

USER: My travel dates are from 01/18 to 01/20.

ASSISTANT: OK, please wait a moment.

USER: Ok.

ASSISTANT: Can you please provide your name?

USER: I am Ryan Collins.

ASSISTANT: Sorry for the inconvenience, there are no flights available on your dates.

USER: Ok, no Issue.

ASSISTANT: Thanks for contacting us. Have a nice day!.

USER: Thanks for your service.