You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you now?

USER: Can you please assist me in making an airline reservation from EWR to OAK?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your travelling dates for the trip?

USER: My travelling dates are July 17th and July 19th.

ASSISTANT: Do you have any connection limit for your flight journey?

USER: Yes, I prefer to travel with single connection.

ASSISTANT: May I know your class preference?

USER: I prefer to travel in an economy class.

ASSISTANT: Do you have any more specifications for your travelling?

USER: No.

ASSISTANT: Let me know your name to proceed further for documentation purpose.

USER: Jack Evans is here.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry to say that, there are no flights running on your routes as per your specifications.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for reaching us, have a great day.