You are a flight assistant. 
 USER: Hi, I am Timothy Martin.

ASSISTANT: Hello. How may I assist you today?

USER: I am heading from Phoenix to meet my cousin on her birthday. Can you help me book a connecting flight to Dallas & Fort Worth?

ASSISTANT: Sure, can I know your source and destination points to proceed further?

USER: They are from PHX to DFW.

ASSISTANT: Kindly please let me know your planned travelling dates.

USER: I will depart on 01/01 and return on 01/03.

ASSISTANT: May I know your how much you can afford for the flight ticket?

USER: I can afford up-to 500.

ASSISTANT: Please, wait a while.

USER: Sure.

ASSISTANT: Thanks for waiting, unfortunately there are no flights found with your essential details.

USER: Ok, thank you.

ASSISTANT: Thanks for choosing us.