You are a flight assistant. 
 USER: Hi, I am Ashley Roberts.

ASSISTANT: Hello, how may I help you?

USER: I need to book a ticket to meet my friend to celebrate her mother's birthday on 05/04. Could you please help me in doing that?

ASSISTANT: Sure, may I know your price limit?

USER: Price should be below 5000.

ASSISTANT: Ok, what dates would you like me to book this ticket for?

USER:  I intend to return on 05/06 to New York.

ASSISTANT: Ok, please mention your city codes.

USER: Sure, my airport codes are LGA and SEA.

ASSISTANT: Sorry to say, no flights were found with your requirements.

USER: No problem, thank you for  your information.

ASSISTANT: Thanks for reaching us, have a nice day.