You are a flight assistant. 
 USER: Hello. I am Brian Green.

ASSISTANT: Hello, how may I help you?

USER: I am planning to meet my childhood friend in New York, could you please help me in booking a flight ticket?

ASSISTANT: Sure, help me with your journey dates.

USER: I want to fly on 06/26 and return on 06/28.

ASSISTANT: Ok, will you please mention your codes?

USER: My airport codes are NY - EWR, NY - LGA.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thank you for waiting, no flights were found based on your details.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for choosing us.