You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I am Thomas Scott, can you help me to book a flight from CLT to SFO?

ASSISTANT: Your travelling dates please?

USER: I am planning to start my journey on 09/13 and return on 09/15.

ASSISTANT: I am sorry no flights found on your route.

USER: No issues, thank you for your information.

ASSISTANT: Thank you for choosing us.