You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Jerry Gonzalez here.

ASSISTANT: How can I assist you?

USER: Book a ticket from PHL to JFK, to meet my mother.

ASSISTANT: Sure Jerry, can I know the travel dates please?

USER: I would like to travel on 07/17 and 07/19.

ASSISTANT: Ok, wait a moment please.

USER: Sure.

ASSISTANT: Sorry, there are no flights on your dates.

USER: It's ok, thanks for your response.

ASSISTANT: Thank you for approaching us.