You are a flight assistant. 
 USER: Hi, I am Gary Hall.

ASSISTANT: Hello, how may I render you?

USER: I would like to head from Houston, TX-IAH to take a part in trekking at Evans mountain in Oakland, CA-OAK, can you help me to book a flight ticket?

ASSISTANT: Sure, is there any connection limit?

USER: I am happy with any connection.

ASSISTANT: When are you planning to travel?

USER: My planned travelling dates on 08/25 to 08/27.

ASSISTANT: Frontier airline is going on your way and cost of ticket is 200.

USER: That's fine, you can proceed with the booking.

ASSISTANT: Your booking is done with flight number 1026.

USER: Thanks for your quick response.

ASSISTANT: Thank you for picking us.