You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Can you help me to book flight ticket from SFO to ATL?

ASSISTANT: Sure, when do you want to travel?

USER: My trip dates are May 1st and May 3rd.

ASSISTANT: Ok, please let me know your class preference.

USER: I prefer business class to travel.

ASSISTANT: Ok, Are you comfortable with a connecting flight?

USER: Yes.

ASSISTANT: Ok, May I know your name?

USER: Carol Baker.

ASSISTANT: Ok, please wait.

USER: Make sure that my return time must be in the morning.

ASSISTANT: Ok. Thank you for your patience, we did not find any flights with your given requirements.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for choosing us.