You are a flight assistant. 
 USER: Hello, I am Mark Edwards.

ASSISTANT: Hello, how may I lend a hand to?

USER: Can you please help me in booking a flight ticket from San Francisco, SFO to Charlotte, CLT?

ASSISTANT: Mark Edwards, I am here to help you for this. Could you please share me your travel dates?

USER: My travelling dates are from May 09 to May 11.

ASSISTANT: Do you prefer any airline?

USER: I am ok with any airline.

ASSISTANT: At what time are you willing to depart and return?

USER: My return time is afternoon.

ASSISTANT: Is there any other specifications regarding your journey?

USER: I need a way station in between journey.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry for inconvenience, no flights are found with your criteria.

USER: That's ok, not a problem.

ASSISTANT: Thank you very much for contacting our agency.

USER: Thanks for your information.

ASSISTANT: You are most welcome.