You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Mary Adams.

ASSISTANT: How can I help you today?

USER: I have a business meting in Seattle. Can you help me for booking a flight ticket from SFO to SEA?

ASSISTANT: Sure, I am here to help you in booking. Can I have your travel dates please?

USER: My travelling dates are 09/13 and 09/15.

ASSISTANT: Please wait a moment.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry, no flights are available on your preferable travel dates.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us, have a nice day.