You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I am Betty King, can you help me to book a flight from IAH to PHL?

ASSISTANT: Sure, can I know the travel dates please?

USER: My travelling dates are 05/03 and 05/05.

ASSISTANT: Sorry King, there are no flights available on your dates.

USER: Ok, no issues. Thank you for your time.

ASSISTANT: Thank you for approaching us.