You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I serve you?

USER: I am Ruth Jackson. I want to book a ticket from CLT to LAX to attend seminar, can you help me in booking?

ASSISTANT: Sure, May I know the journey dates?

USER: I am departing on Apr 18 and return on Apr 20.

ASSISTANT: Do you have any class preference?

USER: I am ok with any class.

ASSISTANT: Please wait a minute.

USER: I want to depart in morning.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for opting us.