You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Timothy Walker.

ASSISTANT: How may I assist you?

USER: I am planning to visit Ferry building market place at San Francisco, SFO. So can you please help me in booking a flight ticket from Charlotte, CLT?

ASSISTANT: Sure, please share me your travel dates?

USER: My journey dates are from 01/04 to 01/06.

ASSISTANT: Do you have any specification?

USER: Yes, I need a break in between journey.

ASSISTANT: Sorry Timothy Walker, there is no flight on your route.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you.