You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,. How can I serve you today?

USER: Can you please help me in booking from San Francisco, SFO to Oakland, OAK by the name George Edwards?

ASSISTANT: Sure, let me know your trip dates please?

USER: Sure, my travelling dates are from 01/27 to 01/29.

ASSISTANT: How much you can afford for a flight ticket?

USER: I can afford up to 5000.

ASSISTANT: Ok, wait a moment. I will revert to you.

USER: Sure.

ASSISTANT: Thanks for waiting, no flights are available to your preferable journey locations.

USER: Ok, no issues. Thank you.

ASSISTANT: Thanks for choosing us.