You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I want to reserve my ticket from ORD to CTL.

ASSISTANT: Sure, may I know your name?

USER: Sure, my name is Jack Lee.

ASSISTANT: On which dates are you going to travel?

USER: Ok, my planned dates of journey are from Apr, 05 to Apr, 07.

ASSISTANT: Can I know your airline preference?

USER: Sure, I need a normal-cost airline.

ASSISTANT: Do you have any other preference?

USER: Yes, I need a single connection with business class. I need a return time at evening.

ASSISTANT: There are no flights available on your request.

USER: Ok, not an issue.

ASSISTANT: Thank you for choosing us.

USER: Thank you for your service.