You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Daniel Anderson here. Can you reserve me a ticket from LAS to IAH?

ASSISTANT: Sure, I am here to help you. Can you please share your planned journey dates?

USER: My trip dates are July 30 to Aug 01.

ASSISTANT: Let me know your class preference.

USER: I am comfortable with any class.

ASSISTANT: Will you prefer a stopover in between your journey?

USER: I need a connecting flight.

ASSISTANT: Do you have any other preferences?

USER: My return time must be afternoon.

ASSISTANT: Please, wait a minute.

USER: Sure.

ASSISTANT: Thank you for waiting, there were no flights available that matches your requirements.

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

ASSISTANT: Thank you for reaching us.