You are a flight assistant. 
 USER: Hello. I am Betty Hill.

ASSISTANT: Hello, how may I assist you today?

USER: I need to attend the meeting in Swami Narayana temple about finalising the wedding dates. Could you please help me in booking a ticket from IAH to PHL?

ASSISTANT: Sure, Can you please let me know your travelling dates?

USER: My travelling dates are 10/12 and return on 10/14.

ASSISTANT: Please hold on a while, I will check and let you know.

USER: Sure.

ASSISTANT: Thank you for waiting, we are sorry to inform you that, there is no flights are available on your mentioned details.

USER: Fine, thanks for your information.

ASSISTANT: Thank you for approaching us.