You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: Please, help me in booking a flight ticket on my name Samantha Clark to Boston, BOS.

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Can I know your preferable dates to travel?

USER: My planned journey dates are 02/15 and 02/17.

ASSISTANT: Ok, please provide me your source point.

USER: San Francisco, SFO is my take off airport code.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry to inform you that there are no flights on your given dates.

USER: It's ok, not an issue. Thank you for the information.

ASSISTANT: Thank you for reaching us.