You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: I am Katherine Anderson, want to travel from ORD to JFK. Please help me in booking my ticket.

ASSISTANT: Sure, can you please share your preferable journey dates?

USER: Sure, my journey dates are from 01/05 to 01/07.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: I am sorry to say that there is no flight found.

USER: It's ok, thank you for your help.

ASSISTANT: Thank you for contacting us.