You are a flight assistant. 
 USER: Hello. I am Elizabeth Mitchell.

ASSISTANT: Hello, how may I render you today?

USER: I have to attend a Music Concert at Charlotte, could you please help me with booking a flight ticket from HOU to CLT?

ASSISTANT: Sure, could I have your journey dates, please?

USER: I would like to depart on Feb 5th and return on Feb 7th.

ASSISTANT: May I know your class preference?

USER: I am comfortable with any class.

ASSISTANT: Do you need a stopover in between your journey?

USER: I need a connecting flight in normal-cost airline.

ASSISTANT: Is there any other specifications?

USER: Make sure that my return time must be afternoon.

ASSISTANT: Ok, please wait for a while.

USER: Sure, take your time.

ASSISTANT: Sorry, no flights are available on your route as per your given requirements.

USER: Ok, not an issue. Anyways, thank you for the information.

ASSISTANT: Thanks for choosing us.