You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Edward Thomas.

ASSISTANT: How may I help you?

USER: Looking for a flight from SFO to OAK, can you help me with booking?

ASSISTANT: Sure, can you share your travel dates please?

USER: Sure, my travel dates are from 06/15 and 06/17.

ASSISTANT: Please wait for a moment. Thanks for waiting. But I am sorry to say that there are no flights available.

USER: Sure.

ASSISTANT: Ok.

USER: It's ok, thanks for your information.

ASSISTANT: Thank you.