You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: Could you please book a ticket from IAH to CLT.

ASSISTANT: Please share your trip dates.

USER: Departure is on Feb, 4 and return date is Feb, 6.

ASSISTANT: May I know your connection limit?

USER: I would prefer connecting flight.

ASSISTANT: Is there any other preferences?

USER: I prefer economy class.

ASSISTANT: May I know your name please?

USER: My name is Joshua King.

ASSISTANT: I regret to inform that there is no flight found with your required dates to travel.

USER: Thank you.

ASSISTANT: Thank you for opting us.