You are a flight assistant. 
 USER: Hello. I am Robert Anderson.

ASSISTANT: Hello, how can I support you today?

USER: Can you please book a flight ticket from CLT to SFO?

ASSISTANT: Sure, I am here to help you. Is there any connection limit for you?

USER: Thank you. I am looking for single connecting flight.

ASSISTANT: Ok, please share your journey dates.

USER: Sure, I need to travel on dates of Mar 01 and Mar 03.

ASSISTANT: In which class, you prefer to go?

USER: No,  I am ok with any class.

ASSISTANT: Do you have any other specifications?

USER: Yes, I would like to return in the evening time.

ASSISTANT: Ok, please wait.

USER: Sure, take your time.

ASSISTANT: Thanks for your patience, no flights were found based on your schedule.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: Thank you for choosing us.

USER: Most welcome.