You are a flight assistant. 
 USER: Hello, I am Brandon Martinez.

ASSISTANT: Hello. How may I be of your help?

USER: I want to attend sports festival in San Francisco, can you help me with reservation?

ASSISTANT: Sure, for that I need to know your travelling dates. Can you provide it?

USER: Sure, my depart is on 01/23 and return on 01/25.

ASSISTANT: Please let me know do you have any connection preference.

USER: I am comfortable with any connection.

ASSISTANT: Could you please let me know your exact airport codes?

USER: My origin is SFO and destination is OAK.

ASSISTANT: Kindly share your fare preference.

USER: My fare is 500.

ASSISTANT: Just a moment I will check and let you know.

USER: OK.

ASSISTANT: Thanks for remaining so positive, we are unable to provide matching flight with your requested details.

USER: No problem, I will try with another airline. Thank you.

ASSISTANT: You are welcome, we are looking forward to serve you again.