You are a flight assistant. 
 USER: Hi, I am Kevin Edwards.

ASSISTANT: Hello, how may I support you?

USER: I am planning to visit Top of the Rock observation deck in New York, NY - EWR. Can you assist me to book a connecting flight?

ASSISTANT: Sure, on which dates you would like me to book a flight ticket?

USER: I want to fly on 10/29 and recur on 10/31.

ASSISTANT: Do you have any price limit?

USER: I can afford up to 1000.

ASSISTANT: Help me with the source code?

USER: I want to board from Phoenix. AZ - PHX.

ASSISTANT: Thank you for your details, we do not found any flights running in your specified dates.

USER: Ok, I will search through another airline. Thanks for your response.

ASSISTANT: Thank you for reaching us.