You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you today?

USER: I need to book a connecting flight from Oakland. Can you help me with that?

ASSISTANT: Sure, may I know on which dates you want to travel?

USER: My journey is on 04/23 and 04/25.

ASSISTANT: Please share your price limit.

USER: 1000 is my price limit.

ASSISTANT: Ok, also provide your journey codes for further process.

USER: My source is OAK and destination is DFW.

ASSISTANT: Ok, may I know your name?

USER: I am Thomas Lee.

ASSISTANT: Please stand by I will revert you.

USER: Ok.

ASSISTANT: Thank you, sorry no flight found with your details.

USER: Ok, thank you for your response.

ASSISTANT: Have a nice day.