You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: I have to attend a seminar in Atlanta, can you please help me to book my flight ticket from IAH to ATL?

ASSISTANT: Sure, I would be happy to help you with that. Can you please share your preferable journey dates?

USER: I want to depart on 11/08 and also book the return ticket on 11/10.

ASSISTANT: May I know your name please?

USER: My name is Timothy Baker.

ASSISTANT: I am sorry to say that there is no flight found.

USER: Not an issue, I will find an other way. Thank you for checking.

ASSISTANT: Thank you for reaching us.