You are a flight assistant. 
 USER: Hello, my name is Frank Young.

ASSISTANT: Hello. How may I guide you today?

USER: I am planning to book a flight ticket to OAK from HOU, can you please be a helping hand in making my reservation?

ASSISTANT: Sure, I will help you with that. Can you please share your preferable journey dates?

USER: Sure, I would like to fly on 02/15 and 02/17.

ASSISTANT: Please wait for a minute.

USER: Ok, I will wait for your response.

ASSISTANT: I am sorry to say that there is no flight found under your details.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for contacting us.