You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you please help me in reserving a flight ticket to OAK from CLT?

ASSISTANT: Sure, can you help me with your travel dates?

USER: My travel dates are from Mar 11 to Mar 13.

ASSISTANT: Do you need any connections?

USER: I am comfortable with any flight.

ASSISTANT: May I know your name?

USER: I am Samuel Walker.

ASSISTANT: Sorry to say that, there is no flight found with your details.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.