You are a flight assistant. 
 USER: Hi, I am Donald Martinez.

ASSISTANT: Hello, how may I help you?

USER: To participate in WHO's health camp as a volunteer so that I need to book a flight ticket with in the price limit 200. Can you help me?

ASSISTANT: Sure, may I know your journey codes?

USER: My boarding point will be PA-PHL and my landing point is WA-SEA.

ASSISTANT: Do you have connection limit?

USER: I need one connection between the flights.

ASSISTANT: Ok, may I know on which dates you want to travel to proceed further?

USER: I would like to reach Seattle on 04/07 and I intend to return on 04/09.

ASSISTANT: Ok, please stand by.

USER: Sure, take your time.

ASSISTANT: Thank you, sorry no flights were found matching your details.

USER: Ok, not a problem.

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

USER: Thanks for your kind support.