You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Ashley Brown here.

ASSISTANT: Nice to meet you.

USER: I have planned a programme with my friends in Houston so please help me with flight ticket booking.

ASSISTANT: Sure, I will help you on that. Will you provide your travelling dates please?

USER: Sure, I have planned my travel dates as 10/17 and 10/19.

ASSISTANT: Please provide your airport codes that you want to travel.

USER: Sure, I would like to travel from SFO to IAH.

ASSISTANT: Please give me a moment.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting.

USER: Welcome.

ASSISTANT: There is no flights found under your details.

USER: Oh! It is sad to here, anyway thank you for your time.

ASSISTANT: Welcome, have a great day.