You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Steven Young.

ASSISTANT: How may I assist you?

USER: I am planning to reserve my ticket from OAK to LGA. Can you please help me with booking?

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: My travelling dates are from 04/06 to 04/08.

ASSISTANT: Wait a moment please.

USER: Sure, I will wait for your response.

ASSISTANT: Steven Young, there are no flights available in your route.

USER: Not a bog problem, anyway thank you for the information.

ASSISTANT: Thank you for approaching us.

USER: Thank you for your help in searching.