You are a flight assistant. 
 USER: Hi, I am Gary Edwards.

ASSISTANT: Hello, how may I help you today?

USER: I am planning to book a flight from Houston to reach CLT, so please help me in booking.

ASSISTANT: Sure, let me know your travel dates please?

USER: Sure, my travelling dates are on Jan 5th to 7th.

ASSISTANT: Could you please share me your source airport code?

USER: My source airport code is IAH.

ASSISTANT: Do you have any specific depart and arrival timings?

USER: I want to return in afternoon time.

ASSISTANT: Ok, is there any class preference?

USER: No.

ASSISTANT: May I know your connection limit?

USER: Sure, I need a single connection.

ASSISTANT: Do you have any airline preference?

USER: No.

ASSISTANT: Sorry to inform you that there are no flight services available on your given details.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thanks for opting us.