You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I am Timothy Thompson. I want to book a ticket from IAH to OAK, can you help me?

ASSISTANT: Sure, can you please mention your traveling dates?

USER: My travel dates are 04/07 and 04/09.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Sorry for the inconvenience, there are no flights available on your route.

USER: No problem, thanks for checking.

ASSISTANT: Thank you for reaching us.