You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I am George Wright.

ASSISTANT: Nice to meet you George.

USER: I would like to book a flight ticket in business class to Detroit to meet my friend. Can you help me in booking a flight ticket?

ASSISTANT: Sure, I will help you with that. Please share your airport codes?

USER: My take off airport code is IAH and destination airport code is DTW.

ASSISTANT: Now can you please tell me your travel dates?

USER: I am planning to depart on Oct 24 and return on Oct 26.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: Thanks for your time. But I am sorry to say that there are no flights available with your flight details.

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

ASSISTANT: Thank you.