You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,.

USER: I am James Clark.

ASSISTANT: How may I be of your assistance today?

USER: Can you please book me a ticket from OAK to HOU to meet my friends?

ASSISTANT: Sure, we are  euphoric to aid you. May I know your itinerary dates?

USER: I have planned to travel on 10/02 to 10/04.

ASSISTANT: Ok. Kindly, share your price limit.

USER: I can afford up to 200.

ASSISTANT: Please, stay online I will check with the availability of planes and revert to you.

USER: Ok.

ASSISTANT: Thanks for your precious time. Sorry, there are no flights found to your route on your request dates.

USER: Ok, no problem.

ASSISTANT: Thank you for availing us.

USER: Thank you.