You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Donald Collins.

ASSISTANT: How can I help you?

USER: I am planning to book a ticket from LAX to IAH. Can you please help me out?

ASSISTANT: Sure, may I know your travel dates please?

USER: I would like to travel on 04/21 and return back on 04/23.

ASSISTANT: Ok, do you have any other specifications?

USER: My connection limit is 1.

ASSISTANT: Please be on hold.

USER: Sure.

ASSISTANT: I have searched for the flights with your details but unfortunately there are no flights available for you.

USER: Yes, you can proceed the booking. That's fine. Thank you.

ASSISTANT: Thank you for choosing us.