You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Jonathan Hall.

ASSISTANT: How may I help you today?

USER: Can you please hold me a direct flight from Phoenix to Seattle?

ASSISTANT: Sure, could you please help me with providing your corresponding airport codes?

USER: My airport codes are PHX- SEA.

ASSISTANT: Kindly assign your preferred dates of travelling?

USER: My trip dates are 01/27 - 01/29.

ASSISTANT: May I know at what price you are looking for ticket?

USER: I can afford up to 200 only.

ASSISTANT: OK, Just wait for a while.

USER: Sure.

ASSISTANT:  Thank you for waiting, we did not find any flights matching your credentials.

USER: It's ok, not a problem.

ASSISTANT: Thanks for availing us.

USER: Thank you.