You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Thomas Young. Can you please book a flight ticket from SFO to ORD?

ASSISTANT: Sure, may I know your travelling dates?

USER: My planned travel dates are Jan, 24 and Jan, 26.

ASSISTANT: Do you need any stopover in between the journey?

USER: I am flexible with any type of flight.

ASSISTANT: Please give me a minute.

USER: Sure.

ASSISTANT: There is no flight available on your requested travel dates.

USER: Ok, not a problem. Thank you for checking.

ASSISTANT: Thanks for availing us.