You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I am Mathew Rodriguez. Help me with booking ticket from OAK to HOU, to visit the Houston Museum of Natural Science.

ASSISTANT: Sure, I will help you in booking, can you please share your travelling dates?

USER: Sure, my journey dates are 07/19 and 07/21.

ASSISTANT: Sorry for the inconvenience, no flights as per your details.

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

ASSISTANT: You are welcome, thank you for reaching us.