You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Robert King here.

ASSISTANT: How may I aid you today?

USER: I am planning to book a flight ticket to EWR from SFO, can you please help me out?

ASSISTANT: sure, please mention your travelling dates?

USER: Sure, my planned travelling dates are 03/14 and 03/16.

ASSISTANT: Please hold moment.

USER: Ok, take your time.

ASSISTANT: Sorry King, there are no flights running on your journey date.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for reaching our service.