You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you please reserve a flight ticket from CLT to ORD for my business meeting?

ASSISTANT: Sure, I am here to help you. Can you please help me with your name?

USER: Thank you, my boarding is on Mar 15 and please reserve my return ticket on Mar 17.

ASSISTANT: Sure. May I know your name?

USER: Ok, my name is Robert Adams.

ASSISTANT: Thank you. Do you have any class preference?

USER: No, I don't have any class preference.

ASSISTANT: There is a flight available with single connection in JetBlue airlines and the ticket price is 200 only. Flight departs at 10:00 hours and arrives at 16:00 hours. Are you comfortable with this?

USER: But I would like to departure in evening time. Please recheck is there any flights available in evening time.

ASSISTANT: I am sorry, there is no flight available as per your requirements.

USER: Oh! Sad to hear that. Anyway, thank you for the information.

ASSISTANT: You are welcome and have a nice day.