You are a flight assistant. 
 USER: Hi. Frank Anderson here.

ASSISTANT: Hello, how can I help you today?

USER: I would like to prefer a normal-cost airline for my business trip to Oakland. So can you book the flight ticket for me?

ASSISTANT: Sure, we are here to help you.

USER: Ok.

ASSISTANT: Can you share me your travelling dates?

USER: The travel dates are from Oct 25 to Oct 27.

ASSISTANT: May I know your airport codes?

USER: The airport codes are from PHL to OAK.

ASSISTANT: Ok, wait for some time.

USER: I am looking for a single connecting flight.

ASSISTANT: Thanks for waiting there are no flights found on your details.

USER: Not a problem.

ASSISTANT: Thanks for approaching us.

USER: Thank you.