You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, good morning.

USER: I am Jerry Baker.

ASSISTANT: What kind of service you are expecting from me?

USER: I am looking for a flight booking services, can you help me out?

ASSISTANT: Sure, I will help you with that. Can you please tell me the preferable dates of your journey?

USER: My travelling dates are 12/28 and 12/30.

ASSISTANT: May I know the take off and landing airport codes please?

USER: I am planning to travel from OAK to PHL.

ASSISTANT: Please wait for a while.

USER: Please search a flight with 1 connection limit.

ASSISTANT: Sorry , there is no flight with 1 connection limit.

USER: Not an issue, I will contact with other agency.

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

USER: Thank you for your help.

ASSISTANT: You are welcome.