You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you?

USER: I need a direct flight to Oakland, OAK.

ASSISTANT: Sure, Can you please provide your source?

USER: Can you help me in booking a flight ticket from Dallas, DFW?

ASSISTANT: Sure, I am here to help you. Can you please provide your journey dates?

USER: My travelling dates are from 11/05 to 11/07.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for your time, we did not find any flights with your given details.

USER: Ok, No problem.

ASSISTANT: May I know your name?

USER: Thanks for the information. My name is Carol Martin.

ASSISTANT: Ok, Thank you for reaching us.

USER: Thank you.